Chloroprene Rubber (CR) Heat –resistance: 90℃-100℃ Life Guarantee: 50 thousand kms Smooth surface 1.High tensile body (core wire): glass fiber with high tensile strength and elasticity that prevent belts from stretching. 2.Rubber teeth: strong thermotolerance and oil resistance, and super strong cohesion between core wire of tensile body and rubber teeth. 3.Nylon fabric: excellent frictional resistance and low skin-friction coefficient which prolong the service life of product. Features (Lownoiseoperation) (No need of lubricant) (Prevent skidding) (Conservation of fuel and good economy) (Super-high mechanical efficiency) Click automotivedrivingbelt.com to see more information.