Features Aluminum alloy, surface oxidation treatment, ensuring maximum durability. Easy to assemble and disassemble, includes 20/60 tooth synchronous wheel and 3-piece timing belt. Widely used in milling machines, gear forming machines, drilling machines, milling machines and other mechanical transmission occasions. Easy and convenient for installation and disassembly, reliable and durable to use. Wonderful replacement for the old or broken one, direct assembly. 1. Aluminum alloy, surface oxidation treatment, which ensures maximum durability. 2. Easy to assemble and disassemble, includes 20/60 tooth synchronous wheel and 3-piece timing belt. 3. Widely used in milling machines, gear forming machines, drilling machines, milling machines and other mechanical transmission occasions. 4. Easy and convenient for installation and disassembly, reliable and durable to use. 5. Wonderful replacement for the old or broken one, direct assembly. Specification: Condition: 100% Brand New Item Type: Timing Belt Pulley Material: Aluminum Alloy Teeth: 60 years 20 teeth Pitch: approx. 2mm Opening: approx. 8 mm / 0.31 inches. Belt width: approx. 6 mm / 0.24 inches. Belt length: approx. 200mm/7.9"; 280mm/11"; 400mm/15.7" Specification: 3pcs/set Packing list: 3 x 20 teeth synchronous wheel 3 x 60 teeth synchronous wheel 3 x Belt Package List 3 x 20 Teeth Synchronous Wheel 3 x 60 Teeth Synchronous Wheel 3 x Belt