pulley-auto parts, machine parts 1.Certificate: ISO/TS: 16949:2009 2.High quality; ... , 5V, 8V D) Sheaves for 3L, 4L or A, and 5L or B belts AK, AKH, 2AK, 2AKH, BK, BKH, 2BK ... bore, taper bore, bore for QD bushing 4) Surface finish paint, phosphate, zinc plate 5) Material cast iron, ductile iron, nylon ... , zinc-plated 5) Standard toothed bars are also available. pulley-auto parts, machine parts