1/4" drive bit thumb wheel

When there isn't enough space to use a full sized screw driver, this thumb wheel can help. It works with standard 1/4" hex shank drive bits. Since it has a bigger diameter and more edges to grab onto, it will provide much higher torque even when you just use bare hand to turn it. If really high torque is needed, simply put a 1/2" box wrench on it. Because it has a slightly tapered outside surface and a flange at the bottom, it will stay securely inside the box wrench. When you are done, tap on t