This Yolyoo 23 pieces Power Nut Driver Bit Sets, it made of chrome vanadium steel,high abrasion/corrosion resistant, which is an imperative part to all tool boxes. Featuring a full range of sizes, can be used with any power drivers or screw-guns.Can be used in household DIY, auto parts, woodworking, professional machine, professional contractor repairing.Come with a storage clip, easier for carrying and organized storage.

Package Included:
Power Nut Driver Bits (Inch): 3/16, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16-Inch
Power Nut Driver Bits (Metric): 5, 5.5, 6, 7, 8, 10, 12 mm; 5 ,6, 7, 8, 9, 10, 11, 12, 13mm