These miniature bearings are made of high quality bearing steel for low noise and long service life.
They are double shielded to avoid contaminants entering and save lubricant.
Bearings have a 8mm inner diameter, a 16mm outer diameter, and a 5mm thickness.
These are great for 8mm shaft/rod projects such as mechanical equipment, electricalinstruments, toys, doors and windows.
There comes total 10 pieces miniature bearings which you may use for many different projects.