Sealey SP3808D WallDrive?? Socket 8mm Deep 3/8"Sq Drive Fully Polished Cold-forged Chrome Vanadium steel socket. Hardened and tempered for added strength. Chrome plated with a fully polished mirror finish. WallDrive© socket configuration. Knurled ring for extra grip with oily fingers. Cold-forged Chrome Vanadium steel socket Hardened and tempered for added strength Chrome plated with a fully polished finish WallDrive© socket configuration Knurled ring for extra grip with oily fingers Lifetime guarantee* Model No SP3808D