Draper expert 12 square drive flexible handle draper expert 13257 expert quality manufactured from chrome vanadium steel hardened tempered chrome plated and polished for corrosion protection hinged joint head and knurled grip spring loaded ball bearing for secure socket holding sold loosemanufactured and tested generally in accordance with din3122 and iso3315 specificationssold loose draper expert 13257 250mm 12 square drive flexible handle