Professional tool for commercial or occasional use. 3/8" drive metric socket, 8mm double deep metric socket. Double deep socket. Manufactured from chrome vanadium steel for strength and durability. 3/8" square drive so will fit any 3/8" drive ratchets / extensions. Metric sockets, 12 sided double hex sockets. Total length of the socket 65mm. Knurled grip for extra grip when using in oily slippy conditions. 8mm Metric Socket. Double Deep Socket. Twelve Point (12 Sided) Sockets. Chrome Vanadium Steel Construction. 3/8" Square Drive.