1/4" drive bit thumb wheel

thingiverse

When space is tight, this handy thumb wheel comes in handy. It works seamlessly with standard 1/4" hex shank drive bits. With a larger diameter and more gripping edges, it delivers significantly higher torque even when you're using just your bare hands to turn it. For maximum torque, simply slip on a 1/2" box wrench - its secure fit is guaranteed by the thumb wheel's slightly tapered outside surface and sturdy flange at the bottom. When you're finished, a gentle tap on the backside will release it easily. A cleverly designed recess for a small magnet keeps the bit from falling out. Enjoy! Be cautious when working with the attached STL files: "1_2 thumb wheel" is perfect for SAE 1/2" wrenches, while "12mm thumb wheel" fits like a charm on 12mm metric wrenches.