... 3.Exported for years 4.ISO9001-2008 certified Reach Jiayuan Synchronous Belt Drive : 1.Straight-bore: MXL,XL,L,H,T2.5 ... ,T5,T10,AT5,AT10,3M,5M,8M,14M;2.Taper-bore: L,H,XH,5M,8M,14M;3.Timing pulley bar ... : MXL,XL,L,T2.5,T5,T10,AT5,AT10,3M,5M,8M;4.Material: Aluminium alloy, Carton steel, Cast iron, Stainless ... , low maintainance;4. lowest radial load on it's support Synchronous Belt Drive