... synchronous pulley, synchronized pulley, steel pulley, sheave, v-belt pulley, double-sided timing belts,oem pulley,timing belt tensioner, tensioner bearing ... 250 mm, iron is used.The pitch&tooth type of double sided timing belt is same as synchronous belt.Note: ... we can produce symmetrical (DA) & overlapping (DB) two kinds double sided timing belts, for particular specification, we can also make ...