- Multi-Purpose: Universal 1/4'' hex shanks fit quick-change and lock firmly, in standard chucks, suitable for any drill, driver and screw-gun.
- The corrosion-resistant sand blasted finish make the PNDB1A power nut driver bit set more durable.
- Full Ranges of Sizes: 20 PCS Power Nut Driver Bits Inch: 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2"; Metric: 4mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm.
- Convenient Storage: Come with a work belt storage clip, it is easier for carrying and organized storage.
- Wide Application: It's widely used in household DIY, auto parts, woodworking, professional machine repairing, etc.