Our Vee idler and Vee drive pulleys/sheaves are made from nylon reinforced fiberglass with and ABEC-1 ball bearings.
Our idler pulleys can be converted to drive pulleys with our drive adapters. Click here for V Idler Pulley specs Maximum bore diameter without an adapter is 17mm (0.669")
For the best in V idler pulleys, Vee drive pulleys and sheaves, insist on DuraBelt.