MIP X-DUTY, Rear CVD Axle 1/10 Scale Traxxas (2WD / 4WD)Contents: 1 x Keyed MIP X-Duty Rear Axle for Traxxas Vehicles1 x 2mm Crush Spacer (goes in-between bearings in hub) 1 x 12mm Keyed Hex + set screw1 x Nylock Wheel NutReplaces #10131