Timing Pulleys and Timing Bars; Teeth profile can be L, XL,MXL, H, XH, XXH; HTD and STD 3M, 5M, 8M, 14M, 20M, 3MR, 5MR, T2.5, T5, T10; AT5, AT10, AT20 etc.
Material can be Carbon steel, alloy steel, cast iron, nylon, alu.;
Surface treatment: black finished; phosphated, zinc plated; anodized.