This Sealey Premier 36 Piece 3/8" Sq Drive Impact Socket Set (Model: AK5633M) is designed for daily, professional use. It is constructed from hardened and tempered Chrome Vanadium steel for strength and durability, with a phosphate finish for added corrosion resistance. The impact-grade sockets are suitable for use with any impact tool and feature 6-point WallDrive sockets, which allow up to 30% more torque to be applied to the fixing. The set includes colour-coded standard and deep sockets for quick and easy identification, ranging from 6mm to 24mm. It also comes with a 75mm extension bar and a universal joint, supplied in a storage case. This set benefits from a lifetime guarantee.