Comprehensive set comprising a driver adaptor and a selection of 14quot insert security bit types the insert bits 25mm long are manufactured from s2 steel hardened and sand blasted bit holder made from aluminium with chrome vanadium steel shaft packed in a handy plastic storage case contents all 25mm long with frac14rdquo shank bull driver with soft grip handle and 14quot magnetic bit holderbull 14quotf x 14quotm magnetic bit holderbull 3 tri winged bi