1)v-ribbed belts 2)Material: EPDM, high-modolus cord 3)Quality: ... Acron fan belt, v-ribbed belt, v ribbed belt, poly-v belt, micro-v belt, PK belt, poly v belt, serpentine belt, automobile belts, engine drive ... , Air compressors, ice cream machines, exercise equipment. PK --Auto serpentine, available in all lengths and custom cut-widths.PL ... back bend idlers, e.g. in serpentine drives v-ribbed belts