Optimum M5 M12 Thread Device

4-step adjustable friction clutch With fixing b 16 Also included: 2 flexible bushings, 2 flexible keys, 1 allen key This product was created with attention to detail, so that the user can feel the optimal quality from the first second A proper balance between customer needs and well-deserved care Made of sturdy material for long time use, Weight: 2.20462262 pounds, Manufacturer: Optimum