This is a wall mount for tools which have a belt clip on them. The current version should fit a fair range of clip designs and sizes. Up to a 38mm wide clip and 5mm deep. There are Milwaukee, Dewalt, Ridgid, Ryobi and Blank designs to choose from. The screw holes are designed for just small 1-2in deck screws. 8mm head, 4-4.5mm shaft diameter.