1/4" drive bit thumb wheel by jeffjiang

Last crawled date: 3 years ago

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 the back side gently to remove it. I put a small cylindrical recess inside for attaching a small magnet. This way the bit won't fall out. Enjoy!
Please be careful with the attached STL files. "1_2 thumb wheel" is for SAE 1/2" wrench and "12mm thumb wheel" is for 12mm metric wrench.