inner tube
thingiverse
Customized version of https://www.thingiverse.com/thing:865533 Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=865533
Download Model from thingiverse
With this file you will be able to print inner tube 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 inner tube.