Bit driver thumb screw
thingiverse
Simple 1/4" bit driver I like to keep handy on my workbench.
Download Model from thingiverse
With this file you will be able to print Bit driver thumb screw with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Bit driver thumb screw.