Feature:1. MAXIMUM DURABILITY: Aluminum alloy material with oxidation treatment to ensure maximum durability2. EASY TO DISASSEMBLE AND ASSEMBLE: Easy to disassemble and assemble, including 20+60 teeth synchronous wheel and 2 synchronous belts3. WIDELY USED IN MECHANICAL TRANSMISSION: Widely used in mechanical transmission occasion such as milling machines, gear forming machines, drilling machines, hobbing machines, etc.4. RELIABLE AND DURABLE: Synchronous wheel is easy to install and disassemble, reliable and durable in use, very practical5. REPLACE OLD OR BROKEN ONES: Aluminum alloy timing pulley is good to replace the old or broken ones and renovate directlySpecification:Item Type: Synchronous WheelMaterial: Aluminum alloyColor: SilverNumber of Big Teeth: 60Number of Small Teeth: 20Inner Hole: Approx. 5mm / 0.2inScrew: M4x4mmClosed Loop Belt: Width: Approx. 6mm / 0.24in, Length: Approx. 200mm / 7.87inApplicable Models: For VORON 2.4 Package List:2 x Big Synchronization Wheel2 x Small Synchronization Wheel2 x Closed Loop Belt4 x M4x4 Screw1 x Wrench