brass knuckles - knock out
thingiverse
source... http://www.thingiverse.com/thing:151505 for children (14) print whit 80% scale
Download Model from thingiverse
With this file you will be able to print brass knuckles - knock out 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 brass knuckles - knock out.