3mm to 5mm bushing
thingiverse
This is an adapter to enable using the toothed belt pulley on an Anet A8 printer. The idler I have features a 5mm bore, but most tensioners only accept a 3mm screw. So rather than drilling and adjusting, you can insert this into the idler and use a standard 3mm screw.
Download Model from thingiverse
With this file you will be able to print 3mm to 5mm 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 3mm to 5mm bushing.