This is a set of two optional Traxxas Rear Stub Axle Carriers, and are intended for use with the Traxxas Slash 4x4, Nitro Rustler, Nitro Stampede and Nitro Sport. These will not only add strength to the rear suspension of your Traxxas Truck, these high quality CNC machined 6061-T6 aluminum axle carriers will help to give your ride a "Pro" Truck look. Includes: (2) Aluminum Rear Stub Axle Carrier (2) 3x3mm Set Screw (2) 3x12mm Flat Head Phillips Screw (2) 3x31.5mm Pin (6) 6mm E-Clip