1/4 Inch Circulation Bearing

This is my best bearing to date. This 1/4 inch bearing has 4 channels that the maker fills with BBs. PVCing the cap on takes a few seconds, and you now have a bearing that only takes steel shot or BBs and plastic.

Lets create more parts on our own! Forget store-bought linear bearings!

(Created in Cubify Invent)