Description: 1/12 Scale Metal Gear Set 13T 37T Bevel Gear Set for HG-801/802 Military Truck RC Spare Parts Suitable for HG-801/802 Military Truck Accessories CNC precision manufacturing. Upgrade parts for 1:12 remote control car truck hobby models. Durable and easy to replacement. Size Chart: Differential Gears Outer Diameter 36mm / 1.41inch,Inner Diameter 4mm / 0.15inch Package Includes: 1 Set Differential Bevel Gear for 1/12 RC Truck Models Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item Due to manual measurement, there may be 1-2mm error in size