1. 1
    AUTOMATIC LINEAR CHAIN TENSIONER ETHR3KU with fork and idler sprocket with bearings model AC (PTFE bushes) Newton300:650
    Price:
    from €84.60
    The body is made of a special anti-seize light alloy and a zinc-coated tensioning head. They include a sprocket. For chain:ISO 1" 16B z12 - 1"1/4 20B z9, simple. Newton300:650
  2. 2
    AUTOMATIC LINEAR CHAIN TENSIONER ETHR3KUTE with fork and hardened teeth idler sprocket ACTE (PTFE bushes) Newton300:650
    Price:
    €86.70
    The body is made of a special anti-seize light alloy and a zinc-coated tensioning head. They include a hardened teeth sprocket. For chain:ISO 1" 16B z12, simple. Newton300:650
  3. 3
    AUTOMATIC LINEAR CHAIN TENSIONER ETHR3TE with fork and hardened teeth idler sprocket model ACTE Newton300:650
    Price:
    €64.40
    The body is made of a special anti-seize light alloy and a zinc-coated tensioning head. They include a hardened teeth sprocket. For chain:ISO 1" 16B z12, simple. Newton300:650
  4. 4
    AUTOMATIC LINEAR CHAIN TENSIONER ETR1AC with idler sprocket model AC Newton130:250-95:190
    Price:
    from €29.50
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21 - 1/2 08B z16 - 5/8 10B z17 - 3/4 12B z15. Simple and double. Newton130:250-95:190
  5. 5
    AUTOMATIC LINEAR CHAIN TENSIONER ETR1ACKU with idler sprocket model AC (PTFE bushes) Newton130:250-95:190
    Price:
    from €44.80
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21 - 1/2 08B z16 - 5/8 10B z17 - 3/4 12B z15. Simple and double. Newton130:250-95:190
  6. 6
    AUTOMATIC LINEAR CHAIN TENSIONER ETR1ACKUTE with hardened idler sprocket model ACTE (PTFE bushes) Newton130:250
    Price:
    from €46.30
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21 - 1/2 08B z16 - 5/8 10B z17 - 3/4 12B z15. Simple. Newton130:250-95:190
  7. 7
    AUTOMATIC LINEAR CHAIN TENSIONER ETR1ACTE with hardened idler sprocket model ACTE Newton130:250-95:190
    Price:
    from €31.10
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21 - 1/2 08B z16 - 5/8 10B z17 - 3/4 12B z15. Simple. Newton130:250-95:190
  8. 8
    AUTOMATIC LINEAR CHAIN TENSIONER ETR1 with idler sprocket model RS-RD-RT Newton130:250-95:190
    Price:
    from €29.50
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z15 - 1/2 08B z15 - 5/8 10B z15 - 3/4 12B z15. Simple, double, triple. Newton130:250-95:190
  9. 9
    AUTOMATIC LINEAR CHAIN TENSIONER ETR1KU with idler sprocket model RS-RD-RT (PTFE bushes) Newton130:250-95:190
    Price:
    from €44.80
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z15 - 1/2 08B z15 - 5/8 10B z15 - 3/4 12B z15. Simple, double, triple. Newton130:250-95:190
  10. 10
    AUTOMATIC LINEAR CHAIN TENSIONER ETR2AC with idler sprocket model AC Newton180:420
    Price:
    from €33.60
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21- 1/2 08B z16- 5/8 10B z17- 3/4 12B z15- 1" 16B z12- 1"1/4 20B z9. Simple and double. Newton180:420
  11. 11
    AUTOMATIC LINEAR CHAIN TENSIONER ETR2ACKU with idler sprocket model AC (PTFE bushes) Newton180:420
    Price:
    from €53.10
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21- 1/2 08B z16- 5/8 10B z17- 3/4 12B z15- 1" 16B z12- 1"1/4 20B z9. Simple and double. Newton180:420
  12. 12
    AUTOMATIC LINEAR CHAIN TENSIONER ETR2ACKUTE with hardened idler sprocket model ACTE (PTFE bushes) Newton180:420
    Price:
    from €54.60
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21- 1/2 08B z16- 5/8 10B z17- 3/4 12B z15- 1" 16B z12. Simple. Newton180:420
  13. 13
    AUTOMATIC LINEAR CHAIN TENSIONER ETR2ACTE with hardened idler sprocket model ACTE Newton180:420
    Price:
    from €35.10
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21- 1/2 08B z16- 5/8 10B z17- 3/4 12B z15- 1" 16B z12. Simple. Newton180:420
  14. 14
    AUTOMATIC LINEAR CHAIN TENSIONER ETR2 with idler sprocket model RS-RD-RT Newton180:420
    Price:
    from €33.60
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z15- 1/2 08B z15- 5/8 10B z15- 3/4 12B z15- 1" 16B z13- 1"1/4 20B z9. Simple double triple. Newton180:420
  15. 15
    AUTOMATIC LINEAR CHAIN TENSIONER ETR2 with idler sprocket model RS-RD-RT (PTFE bushes) Newton180:420
    Price:
    from €53.10
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z15- 1/2 08B z15- 5/8 10B z15- 3/4 12B z15- 1" 16B z13- 1"1/4 20B z9. Simple double triple. Newton180:420
  16. 16
    AUTOMATIC LINEAR CHAIN TENSIONER ETR3 AC with idler sprocket model AC Newton300:650
    Price:
    from €44.50
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21-1/2 08B z16-5/8 10B z17-3/4 12B z15-1" 16B z12-1"1/4 20B z9-1"1/2 24B z9-1"3/4 28B z9. Simple, double. Newton300:650
  17. 17
    AUTOMATIC LINEAR CHAIN TENSIONERS ETR3ACKU with idler sprocket model AC (PTFE bushes) Newton300:650
    Price:
    from €70.00
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21-1/2 08B z16-5/8 10B z17-3/4 12B z15-1" 16B z12-1"1/4 20B z9-1"1/2 24B z9-1"3/4 28B z9. Simple, double. Newton300:650
  18. 18
    AUTOMATIC LINEAR CHAIN TENSIONER ETR3 AC KU TE with hardened idler sprocket model ACTE (PTFE bushes) Newton300:650
    Price:
    from €71.50
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21-1/2 08B z16-5/8 10B z17-3/4 12B z15-1" 16B z12. Simple. Newton300:650
  19. 19
    AUTOMATIC LINEAR CHAIN TENSIONER ETR3 AC TE with hardened idler sprocket model ACTE Newton300:650
    Price:
    from €46.10
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z21-1/2 08B z16-5/8 10B z17-3/4 12B z15-1" 16B z12. Simple. Newton300:650
  20. 20
    AUTOMATIC LINEAR CHAIN TENSIONER ETR3 with idler sprocket model RS-RD-RT Newton300:650
    Price:
    from €44.50
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z15-1/2 08B z15-5/8 10B z15-3/4 12B z15-1" 16B z13-1"1/4 20B z9-1"1/2 24B z9-1"3/4 28B z9. Newton300:650
  21. 21
    AUTOMATIC LINEAR CHAIN TENSIONER ETR3 KU with idler sprocket model RS-RD-RT (PTFE bushes) Newton300:650
    Price:
    from €70.00
    Body is made of a special anti-seize light alloy, aluminium tensioning head and it includes a sprocket.For chain:ISO 3/8 06B z15-1/2 08B z15-5/8 10B z15-3/4 12B z15-1" 16B z13-1"1/4 20B z9-1"1/2 24B z9-1"3/4 28B z9. Newton300:650
  22. 22
    BELT TENSIONER ROLLER BRACKET
    Price:
    from €33.90
    These brackets are made to support our belt tensioner rollers type PU. They are available with the double shielding bearing pulley. They are set up one by one to check the proper sliding of the bearing.
  23. 23
    SPROCKET BRACKET
    Price:
    from €21.80
    They support simple and double chain sprockets and are available with the sprocket set up. They are economic, strong and easy to be set up so you can avoid other solutions
  24. 24
    BRACKET HR with hardened sprocket ACTE
    Price:
    from €23.40
    They support simple and double chain sprockets and are available with the sprocket set up. They are economic, strong and easy to be set up so you can avoid other solutions .
  25. 25
    LEVER for TR1 tensioner
    Price:
    from €5.30
    TR versatility is due to the possibility to change the levers so to get various heights without losing rigidity. For type TR1 we have lever 110,111,115,118 and for type TR2 the levers 210,218,227.
  26. 26
    LEVER for TR2 tensioner
    Price:
    from €7.40
    The versatility of the TR models is due to the possibility to change the load lever so as to reach any height without losing in rigidity. They have interchangeable 110,111,115,118 levers for the type 1 and 210,218,227 levers for the type 2.
  27. 27
    DIRECTABLE ROTARY TENSIONERS ORIENT with hole or threaded bore
    Price:
    from €14.00
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers . ORIENT with boring or threading ( boring or threading on demand).
  28. 28
    DIRECTABLE ROTARY CHAIN TENSIONER ORIENTP with chain slider oval head
    Price:
    from €21.00
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers .ORIENT-P with a polyethylene 1'000'000 UHMW head and with a dynamic friction factor that is 0,06 dry steel.
  29. 29
    DIRECTABLE ROTARY CHAIN TENSIONER ORIENTP with chain slider round head
    Price:
    from €21.70
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers .ORIENT-P with a polyethylene 1'000'000 UHMW head and with a dynamic friction factor that is 0,06 dry steel.
  30. 30
    DIRECTABLE ROTARY BELT TENSIONER ORIENTPU with idler roller
    Price:
    from €25.60
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers .ORIENT-PU with idler roller ( on our catalogue you can find pulleys made of different materials and in different measures).
  31. 31
    DIRECTABLE ROTARY BELT TENSIONER ORIENTPUG with rim pulley
    Price:
    from €30.40
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers .ORIENT-PUG with a rim pulley and protections.
  32. 32
    DIRECTABLE ROTARY CHAIN TENSIONER ORIENTR with idler sprocket AC
    Price:
    from €23.10
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers .ORIENT-R with idler sprocket .
  33. 33
    DIRECTABLE ROTARY CHAIN TENSIONER ORIENTR with hardened idler sprocket ACTE
    Price:
    from €24.60
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers .ORIENT-R with idler sprocket .
  34. 34
    DIRECTABLE ROTARY CHAIN TENSIONER ORIENTR with idler sprocket RS RD RT
    Price:
    from €23.10
    The rotary tensioner type Orient works as a fixed device and inside there are neither halical springs nor elastomers .ORIENT-R with idler sprocket .
  35. 35
    IDLER ROLLERS (Steel-Aluminium-Nylon) with bearings
    Price:
    from €8.80
    Our IDLER ROLLERS PU can be made of Aluminium, Zinc Coated Steel and plastic material type PA6. Ø30 L 35 - Ø40 L45 – Ø40 L 50 – Ø50 L 50 - Ø50 L65 – Ø60 L60 – Ø60 L90 – Ø80 L80- Ø80 L90.
  36. 36
    RIM PULLEY with bearings
    Price:
    from €13.60
    type PUG rim pulley ( A) made of PA6 plastic material with double shielding bearing , protection caps and on demand you can get them in Aluminium, in Zinc-Coated Steel or Stainless Steel , various sizes and type of rim.
  37. 37
    CHAIN TENSIONING ELEMENT RHB111 with idler sprocket RS Newton10:120
    Price:
    from €24.10
    Light alloy body and lever and a idler sprocket.Inside the bases there are 4 rubber elastomers with high elastic memory.
  38. 38
    CHAIN TENSIONING ELEMENT RHB155 with idler sprocket AC-RS Newton30:280
    Price:
    from €27.00
    Light alloy body and lever and a idler sprocket.Inside the bases there are 4 rubber elastomers with high elastic memory.
  39. 39
    CHAIN TENSIONING ELEMENT RHB188 with idler sprocket AC Newton50:500
    Price:
    from €30.10
    Light alloy body and lever and a idler sprocket.Inside the bases there are 4 rubber elastomers with high elastic memory.
  40. 40
    CHAIN TENSIONING ELEMENT RHB188TE with hardened idler sprocket ACTE Newton50:500
    Price:
    from €31.60
    Light alloy body and lever and a idler sprocket.Inside the bases there are 4 rubber elastomers with high elastic memory.
  41. 41
    CHAIN TENSIONING ELEMENT RHB277 with idler sprocket AC Newton80:1200
    Price:
    from €40.60
    Light alloy body and lever and a idler sprocket.Inside the bases there are 4 rubber elastomers with high elastic memory.
  42. 42
    CHAIN TENSIONING ELEMENT RHB277TE with hardened idler sprocket ACTE Newton80:1200
    Price:
    from €42.10
    Light alloy body and lever and a idler sprocket.Inside the bases there are 4 rubber elastomers with high elastic memory.
  43. 43
    CHAIN TENSIONING ELEMENT RHP111 with chain slider oval head Newton10:120
    Price:
    from €21.10
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  44. 44
    CHAIN TENSIONING ELEMENT RHP111 with chain slider round head Newton10:120
    Price:
    from €21.80
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  45. 45
    CHAIN TENSIONING ELEMENT RHP155 with chain slider oval head Newton30:280
    Price:
    from €24.10
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  46. 46
    CHAIN TENSIONING ELEMENT RHP155 with chain slider round head Newton30:280
    Price:
    from €24.90
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  47. 47
    CHAIN TENSIONING ELEMENT RHP188 with chain slider oval head Newton50:500
    Price:
    from €27.30
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  48. 48
    CHAIN TENSIONING ELEMENT RHP188 with chain slider round head Newton50:500
    Price:
    from €28.00
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  49. 49
    CHAIN TENSIONING ELEMENT RHP227 with chain slider oval head Newton80:1200
    Price:
    from €42.80
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  50. 50
    CHAIN TENSIONING ELEMENT RHP227 with chain slider round head Newton80:1200
    Price:
    from €44.20
    Type RHP have light alloy body and lever and a PE 1000 UHMW tensioning head. Inside the bases there are 4 rubber elastomers with high elastic memory.
  51. 51
    BELT TENSIONING ELEMENT RHPU111 with idler roller Newton10:120
    Price:
    from €23.80
    Type RHPU have light alloy body and lever and a belt tensioning idler roller. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the idler rollers.
  52. 52
    BELT TENSIONING ELEMENT RHPU155 with idler roller Newton30:280
    Price:
    from €26.70
    Type RHPU have light alloy body and lever and a belt tensioning idler roller. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the idler rollers.
  53. 53
    BELT TENSIONING ELEMENT RHPU188 with idler roller Newton50:500
    Price:
    from €28.40
    Type RHPU have light alloy body and lever and a belt tensioning idler roller. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the idler rollers.
  54. 54
    BELT TENSIONING ELEMENT RHPU277 with idler roller Newton80:1200
    Price:
    from €40.30
    Type RHPU have light alloy body and lever and a belt tensioning idler roller. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the idler rollers.
  55. 55
    BELT TENSIONING ELEMENT RHPUG111 with rim pulley Newton10:120
    Price:
    from €28.60
    Light alloy body and lever and a belt tensioning pulley.Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the pulley with double shielded bearings bearings
  56. 56
    BELT TENSIONING ELEMENT RHPUG155 with rim pulley Newton30:280
    Price:
    from €31.50
    Light alloy body and lever and a belt tensioning pulley.Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the pulley with double shielded bearings bearings
  57. 57
    BELT TENSIONING ELEMENT RHPUG188 with rim pulley Newton50:500
    Price:
    from €34.60
    Light alloy body and lever and a belt tensioning pulley.Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the pulley with double shielded bearings bearings
  58. 58
    BELT TENSIONING ELEMENT RHPUG277 with rim pulley Newton80:1200
    Price:
    from €43.70
    Light alloy body and lever and a belt tensioning pulley.Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the pulley with double shielded bearings bearings
  59. 59
    CHAIN TENSIONING ELEMENT RHR111AC with idler sprocket AC Newton10:120
    Price:
    from €22.00
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  60. 60
    CHAIN TENSIONING ELEMENT RHR111ACTE with hardened idler sprocket ACTE Newton10:120
    Price:
    from €23.50
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  61. 61
    CHAIN TENSIONING ELEMENT RHR111 with idler sprocket RS RD RT Newton10:120
    Price:
    from €22.00
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  62. 62
    CHAIN TENSIONING ELEMENT RHR155AC with idler sprocket AC Newton30:280
    Price:
    from €24.90
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  63. 63
    CHAIN TENSIONING ELEMENT RHR155ACTE with hardened idler sprocket ACTE Newton30:280
    Price:
    from €26.50
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  64. 64
    CHAIN TENSIONING ELEMENT RHR155 with idler sprocket RS RD RT Newton30:280
    Price:
    from €24.90
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  65. 65
    CHAIN TENSIONING ELEMENT RHR188AC with idler sprocket AC Newton50:500
    Price:
    from €28.00
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  66. 66
    CHAIN TENSIONING ELEMENT RHR188ACTE with hardened idler sprocket ACTE Newton50:500
    Price:
    from €29.50
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  67. 67
    CHAIN TENSIONING ELEMENT RHR188 with idler sprocket RS RD RT Newton50:500
    Price:
    from €28.00
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  68. 68
    CHAIN TENSIONING ELEMENT RHR277AC with idler sprocket AC Newton80:1200
    Price:
    from €38.50
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  69. 69
    CHAIN TENSIONING ELEMENT RHR277ACTE with hardened idler sprocket ACTE Newton80:1200
    Price:
    from €40.00
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  70. 70
    CHAIN TENSIONING ELEMENT RHR277 with idler sprocket RS RD RT Newton50:500
    Price:
    from €37.80
    Type RHR - RHB have light alloy body and lever and a sprocket. Inside the bases there are 4 rubber elastomers with high elastic memory. In addition there is a lever with bore and thread where you can set up the sprocket with double shielded bearings.
  71. 71
    AUTOMATIC GREASER "SA"
    Price:
    from €28.60
    Our greasers type SA are spring devices; They are made of light alloy to get the maximum performance and the minimum weight; You can re-fill them whenever you may need thanks to the grease nipple.
  72. 72
    AUTOMATIC ARM BELT TENSIONER TC05PU with idler roller Newton30:80
    Price:
    from €24.90
    Body and the lever made of a special anti-seize plastic material POM.They include a idler rollers with double shielded bearings bearings of various sizes and materials. Useful tensioning angle 75° in both sense of rotation.