1 These miniature bearings are made of high quality bearing steel for low noise and long service life 2 They are double shielded to avoid contaminants entering and save lubricant 3 Bearings have a 4mm inner diameter, a 9mm outer diameter, a 4mm thickness and a 10.3mm flange 4 These are great for small hobby 4mm shaft/rod projects such as 3D printer, quadcopter or ship model 5 There comes total 10 pieces miniature bearings which you may use for many different projects
What's in the box
1 x Ball Bearings
