Timing pulley: 1. International standard 2. OEM production with good quality, reasonable price 3. No noise, high ... :1. Plain bore: MXL, XL, L, H; T2.5, T5, T10; AT5, AT10; HTD 3M, 5M, 8M, 14M.2. ... assemblies,torque limiter, gear,couplings,shaft,gears,sprockets andprocessing with supplied drawings.The products are sold to USA,UK,Spain ... :We've been ISO9001:2000 certified since 2003. T5 timing pulleys