M4 Rosette Thumb Screw
thingiverse
These handy devices are perfect for adjusting M4 bolts using your thumbs! You can find an M3 version in my Simplify3D files at http://www.thingiverse.com/thing:5514. Just print, press onto the end of your preferred M4 bolt, and enjoy easy adjustments.
Download Model from thingiverse
With this file you will be able to print M4 Rosette 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 M4 Rosette Thumb Screw.