Tusk Adjustable Width Racing Axle. High performance racing axle giving you the choice of increasing the width. Forged from special chromoly hardened steel with a chrome plating finish. Includes posi lock axle nut, brake hub and castle nuts.Axle nut wrenches available, for this axle use the 70mm and the 46mm. Adjustablity - 2 3/8" to 4 3/8" over stock width.