Description: Material: The differential gear set is crafted from alloy, ensuring durability and great performance for your RC modelsPrecision Engineering: The gear diameters are meticulously measured at 39.5mm/1.56inch,17mm/0.67inch,15mm/0.59inch,9.5mm/0.37inch to ensure great compatibility and smooth operating within your model's drivetrainComplete Set Included: This package includes a full set of front and rear differential gears, providing everything you need for an upgrade or replacementEnhanced Performance: Upgrade your RC car's performance with this sturdy differential gear set that offers improved handling and stability on various terrainsRC model accessory:High upgrade parts for your model car, sturdy use for remote control RC vehicle models Specification: Material: alloy Size Chart: gear diameters:39.5mm/1.56inch,17mm/0.67inch,15mm/0.59inch,9.5mm/0.37inch Package Includes: 1 Set Differential Gear Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!