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-55 Width: 13mm Thickness: 9mm Inner Length: 55" Color: Black Inner Diameter: 1372mm/54" Package Content:1 x Drive Belt