31 pcs bit set for slotted, Phillips, Pozidriv, TORX®, Hexagon head screws, bit holder and socket adaptor 1/4",In cardboard packaging,Drive: 1/4" DIN 3126-C6.3, ISO 1173,Finish: Sand blasting,Material: S2 high alloy steel,59/S31B-IP: in bulk. Served in a counter display of 12pcs