Rubber timing belts kits MXL,XL,L,H,XH,XXH,T2.5,T5/AT5, ... /RP3M,S4.5M,5M/S5M/RP5M etc Rubber timing belts kits Synchronous belts are one of the most important part of ... as fixed speed ratio, no re-tensioning after installation, low maintenance with wide variety of power transmission capacity and drive speeds ...