Descriptions: The outside fabric wrap is treated with high oil and heat resistance. Specially engineered, twisted, heat and chemically set, neoprene rubber material. The body rubber compound is a highly engineered synthetic rubber compound. Specifications: Product Name: Drive Belt Material: Neoprene Rubber Type: A-584 Width: 13mm Thickness: 8mm Inner Girth: 584mm / 23" Outer Girth: 645mm Color: Black Package Content:1 x Drive Belt