ITEM NAME:Axial SCX10 HD Steel Drive Crown Axles Gear Set 13/38T For Front/ Rear Axle A#S Product Description Description: Size: 4*4*3 (CM) Weight: 0.05 KG Material: steel; Surface treatment: Spray paint; Material: Steel Color: Black For Axial SCX10 13/38T Included: 1X 13T Gear 1X 38T Gear.For Axial SCX10. 1X 38T Gear. Size: 4 4 3 (CM). 1X 13T Gear. Material: steel;. Material: Steel. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.