... cord is stainless steel, and Kevlar A)Specification: XL, L, H, XH, T5, T10, T20, AT5, AT10, AT20, 3M, 5M, ... wire core or kevlar core at option; C)All models teeth could be covered with green fabric and back covered ... in short time, can be combined with other thermoplastic materials. H)Hard to be hydrolyzed, anti- acid, UV resistant, not ... the load force. Rubber Timing Belt, Rubber Synchronous Belts (H)