Dumbbell
thingiverse
You can add/remove weight to this dumbbell, by making a whole somewhere in the object and pouring sand or water.
Download Model from thingiverse
With this file you will be able to print Dumbbell 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 Dumbbell.