Set features the most popular sizes of screwdriving bits, drill bits and nut drivers. Each bit has a 1/4" hex shank. 135-degree split point tip prevents drill bit walking. Black oxide coating resists corrosion and extends bit life. Compatible with all drills and impact drivers. Includes (1) magnetic bit holder, (1) 1/4" hex to square adapter, (2) magnetic nut drivers at 1/4" and 5/16", (4) hex shank drill bits at 1/16" and 1/4", (21) assorted 1" insert bits, (6) assorted 2" driver bits, (3) assorted 3-1/2" driver bits, and clamshell carry case with bit holders.