Ck screwdriver bit sets ck tools t4569tinc premium quality chrome vanadium steel titanium nitride coated for increased wear protection precision machined for high performance screwdriving featuring grip tip anti cam out ribs designed to positively engage with the screw head and reduce the risk of slip and cam out set supplied in a convenient bit storage case complete with magnetic bit holderdriver adaptor bit sizes pzd 1 2 4 off amp 3 ck tools t4569tinc screwdriver 6 in 1 bi