... auxiliary pulley series products. 1. Industrial Rubber Timing Belts MXL, XL, XXL, L, H, XH, XXH, T2.5, T5, T10, T20 ... Belts(Truly endless) T2.5, T5, T10, AT5, AT10, MXL, XL, L, H, 3M, 5M, S3M, Double sided, *T10-3040 special ... 4. Polyurethane(PU) Timing Belts(Open End and welding) MXL, XL, L, H, XH, XXH, 3M, 5M, 8M, 14M, 20M, S3M ...