1.Polyurethane Open Ended Timing belt or joined endless type and truly endless type 2.Strengthen cord is stainless steel A)Specification: XL, L, H, XH, T5, T10, T20, AT5, AT10, AT20, 3M, 5M, 8M, 14M; B)It could be reinforced by steel wire core or kevlar core at option; C)All models teeth could be covered with green fabric and back covered with linatex. All items could be jointed endless. D)Made ...