About this 3D model

A very simple upgrade for the SeemeCnc H1 printer is replacing the idlers for the belts with ball bearings. Using the stock bolts this means we need a sleeve to go from the 1/4" cap screw to the 8mm ID of the bearing. The bearings are cheap readily available skateboard bearings. Also known as 608 size. Measurements: 22mm OD 8mm ID 7mm height This is quite possibly the second simplest STL on thingiverse after a cal cube!