Simple bushing
thingiverse
This is a simple cylindrical bushing. I've included the Blender file if you need to tweak it some more.
Download Model from thingiverse
With this file you will be able to print Simple bushing 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 Simple bushing.