Our synchronous pulleys are: 1. Heavy suty,no slip 2. Reliable operation 3. Compact design 4. Reasonable price We are a leading manufacturer of Synchronous Pulleys and Timing Pulleys Stock in China and ISO9001 certificated.We manufacture Synchronous pulleys and timing bars as follows: H, XH, XXH; L, XL, MXL; T2.5, T5, T10, T20; 3M, 5M, 8M, 14M; AT5, AT10, AT20; 3MR, 5MR, etc. Bore: Pilot bore, ...