By Profile: Standard trapezoidal (e.g., MXL, XL, L, H, XH, XXH), curvilinear (e.g., 3M, 5M, 8M, 14M, 20M), and special profiles (e.g., AT, ATD). By Construction: Single-sided belts, double-sided belts (DA/DB type), molded endless belts, and open-ended belts. By Material: Rubber timing belts (Neoprene with fiberglass cords),...