4pcs - 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 quickly to tighten simply turn the wing nut by power drill your Impact Driver or Drill you drive any wing nuts bolt or C head Eye hook screw up to 5x faster than you can by hand 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 This wing nut driver is a perfect tool that works with any power drill (1/4 inch hex ) Wing Nuts Driver Set - A must have tools for/Snowstorm protection for windows doors hardware Warm note:It doesn't work on electrical wire nutsThe tool obviously handled exceedingly high rpms, but for safety and control, one should keep rpms low Colour: silverMaterial: CR-V steelSize: 2-1/2 inch (65 mm)Package Contents:4 * Wing nut drivesOnly the above package content, other products are not included Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing The measurement allowed error is +/- 1-3cm