10 piece 1/4square drive. Mm/ imperial combined set of deep draper expert hi-torque sockets expert quality, 6 point sockets manufactured from chrome vanadium steel, hardened, tempered, chrome plated & polished for corrosion protection. Chamfered ends allow positive nut location. Overall lengths 50mm. Display packed. Contents: 6, 8, 10, 11 & 13mm, 1/4, 5/16, 3/8, 7/16 & 1/2 imperial. Overall lengths 50mm..