qr grip
thingiverse
support needed remixed from https://www.thingiverse.com/thing:2237550 https://www.thingiverse.com/thing:4614448
Download Model from thingiverse
With this file you will be able to print qr grip 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 qr grip.