... type. 2.Strengthen cord is stainless steel A)Specification: XL, L, H, XH, T5, T10, T20, AT5, AT10, AT20, 3M, 5M ... . D)Made of thermoplastic polyurethane materials with high wear resistance; E)In the high-load transmission is still keeping good loading ... load force. PU Timing Belt, Open End PU Timing Belt (L)