... member-polyester,nylon 4)Bottom rubber-CR, PK ribbed v-belts for automobile: Automobile PK V-ribbed belt section TypeRib sectionAngle ... :Mix size packed in export standard cartons(Meas.65x37x27cm). Fan belts 3PK,4PK,5PK,6PK,7PK,8PK,9PK,10PK,12PK