Draper expert 6mm 38 square drive hi torq bi hexagon sockets draper expert 13237 expert quality 12 point sockets manufactured from chrome vanadium steel hardened tempered chrome plated and polished for corrosion protection chamfered ends allow 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 13237 17mm 38 square drive hi torq b