Description: Made of hardened and strengthen steel material, sturdy and durable Not easy to deform, no easy to break Replacement main gear / motor gear for the original broken or missing one Nice accessories to upgrade the performance of your RC car Specification: Types: 54T, 50T, 46T, 15T, 16T, 17T, 18T, 19T, 20T, 21T (Optional) Main Material: Steel Color: Black Applicable Model: for X-Maxx RC Car Package: 1x Gear