we made the timing pulley MXL XL L H XH XXH T2. ... T10 T20 3M 5M 8M 14M) . Metric T-Series Timing Pulleys :T2.5,T5,T10,T20,AT5,AT10,AT20 .HTD ... Pulleys, Taper Bushed, QD optional :HTD-2M,3M,5M, ... Inch Bore Taper Bushings for Sprockets, Sheaves and Timing Pulleys . Super-Torque Timing Pulleys 1. Material: Stainless Steel, Brass, Aluminum, POM, and other standard machineable ...