... T5 T10 T20 3M 5M 8M 14M). Metric T-Series Timing Pulleys :T2.5,T5,T10,T20,AT5,AT10,AT20.HTD ... and Inch Bore Taper Bushings for Sprockets, Sheaves and Timing Pulleys . Super-Torque Timing Pulleys1. Material: Stainless Steel, Brass, Aluminum, POM, and ... make the gears strictly as per your drawing/sample.Welcome to contact us for a quote on your Gear machining needs!