... Types:1. Metric T-Series Timing Pulleys :T2.5,T5,T10,T20,AT5,AT10,AT202. HTD Pulleys, Taper Bushed, QD optional :HTD ... ,S4.5M,S5M,S8M,S14M,RPP2M,RPP3M,RPP5M,RPP8M,RPP14M3. Taper Bushed Synchronous: MXL, XL, L, H,XH,XXH Pulleys ... aslo manufactures auxiliary pulley. It can design & manufacture timing belt with special specification & models to satisfy customer's special use requirements. Timing pulley 5M