Sealey WallDrive Socket 8mm 1/4" Square Drive Fully Polished Socket Set SP1408. This socket is made from cold-forged Chrome Vanadium steel, which is hardened and tempered for added strength. It features a chrome-plated, fully polished mirror finish and the WallDrive socket configuration. A knurled ring provides extra grip for oily fingers. The socket comes with a lifetime guarantee. Model No. SP1408.