Draper expert 38 12 square drive hi torq bi hexagon socket draper expert 11581 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 sold loosemanufactured and tested generally in accordance with din3122 and iso3315 specificationsdraper expert hi torq174 is a registered trademark of draper tools ltd draper expert 11581 12 12 square drive hi torq