Expert 1516 12 square drive hi torq socket draper expert 76924 expert quality 12 point sockets manufactured from chrome vanadium steel hardened tempered chrome plated and polished for corrosion protection chamfered end allows positive nut location display packedmanufactured and tested generally in accordance with din3122 and iso3315 specificationsdraper expert hi torq174 is a registered trademark of draper tools ltd draper expert 76924 1116 12 square drive hi torq bi hexago