Features: 1. This drills nut driver bit designed to tighten or loosen wing nuts, bolts, hooks quickly and effectively when installing shutters/panels or doing other projects, and saves lots of your time and get your job done more faster. 2. Just pop it into a power screwdriver and get the wingnut / shutters installed without concern about spraining your thumbs by using other hardware tools, saves wears and tears on your fingers 3. Quickly to tighten, just simply turn the wing nut with a power drill. Your impact driver or drill you drive just about any wing nuts bolt or C head eye hook screw. 4. Made from High carbon steel process, no rust which is highly strong and sturdy for long time use. 5. For household DIY, auto parts, woodworking, gardenprofessional machine repairing, etc. Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement Description: Shank diameter: 6.3mm includes: Choice 1: 1 pcs x Power Wing Nut Driver Choice 2: 2 pcs x Power Wing Nut Driver