The Aluminum Hex Hub for Select Axial RC Trucks from Atomik RC is a replacement adapter for the Axial Wraith, SCX10, and EXO Terra RC truck models. This set consists of four 12 x 9mm blue hex hubs designed to replace Axial part numbers AX30427 and AX30429. The Atomik RC hex hubs have been precision CNC-machined out of hardened 6061 billet aluminum for strength and stability.