Product Name:Nut Zipper Drill Attachment Compatibility: 1/4inch, 3/8inch, and 1/2inch; Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Notes: 1. For use with standard power drills-avoid using with impact drivers. 2. Always wear gloves and eye protection during operation. 3. Best suited for dry environments; not intended for wet or muddy job sites. 4. Clean after each use to prevent buildup and extend lifespan. 5. proper alignment on threaded rods to avoid -threading. Colour:As Shown Material:plastic Package Contents: 1 x Nut Zipper Drill Attachment Only 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.