Feature●The belts exceed USA RMA published ratings levels. They are designed to perform at the identical or higher level than all other major USA Manufacturers belts of the same type●Belts may not come in a cardboard sleeve●The lower, compression section of the belt is made of highly fiber reinforced, oil and heat resistant●Engineered synthetic rubber compound, specifically compounded for excellent wear resistance, cool running, and flexibilityDescription Belt AX 1/2 x 51in OC.