This is the optional Hot Racing 12mm Hex Wheel Hub Conversion for the Axial Yeti. FEATURES: CNC machined blue anodized aluminum hex and axle extensions CNC machined and hardened #45 steel front and rear axles Allows the use of most 2.2" truck wheels on the Yeti Directly compatible with the Yeti RTR-kit version requires two Axial AX30418 dogbone sets Thirty day limited warranty beginning at date of purchase- valid in the United States only INCLUDES: Two each; Front Hexes Rear Hexes Rear Wheel Extensions Long Rear Axles Front Outer Axle Stubs Four Set Screws REQUIRES: Axial AX30418 Dogbone Set (AXIC3418) only if installing on kit version of Yeti