Draper expert 34 square drive bi hexagon socket draper expert 10157 expert quality 34 square drive 12 point sockets forged 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 10157 36mm 34 square drive bi hexagon