The Hex head 1/4" screw mini driver. Ergonomically shaped T-shaped handle allows easy insertion for your screws into your boot. The adapter for Best Grip studs fits snugly into this versatile tool. It has a key ring hole drilled into the handle, never lose it! You can use this tool for any 1/4"hex nut drill bit application in your tool box. Multi use functionality, definitely not a stand alone tool for wader boot screws.