This is a driver bit holder for a Dewalt drill. For some reason the driver bit holder is not included with this drill, and you must buy this thing http://www.amazon.com/DeWalt-Holder-Hammerdrill-DCD980L2-DCD985L2/dp/B00737G9C6 I found the screwdriver clip by StanReifel and decided to modify it to screw into the regular attachment points on the drill. All you need is the printed part and an m3 screw.I printed mine in white abs at 0.2 layer thickness. I used a brim and printed it both with and without support material. Mine required a bit of trimming around the overhangs. You may need to scale the part by 10. Attach with m3 screws.