Features: The gear set is accuracy manufactured gear teeth for glossy and consistent performances and low noise. Differential gear slipper clutch is hardened steel, which is resistant to wear and tear and more durability. Easy to install and remove with simple steps to complete the installation. Differential slipper clutch fits firmly, which helps to improve the performances. Delivering superior handling and driving experience that will satisfy the demands of even the most passionate hobbyists. Specifications: Component:Metal Type:44T/46T 44T:Approx.4.6x4.6cm/1.81x1.81inch 46T:Approx.4.6x4.8cm/1.81x1.89inch Package Includes: 1Pc Slipper Clutch Gear note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.