608ZZ Ball Bearing (8x22x7)
These bearings are made of quality chrome steel, which ensures they are durable and long lasting. We have used them extensively in our printer builds and found them to be reliable in every way.
They fit an 8mm shaft, and are often used in 3D printer / RepRap builds - most commonly in extruders. They can also be used in filament holders/rollers, along with many other 3D printing and CNC applications.