Description:

• Made of high quality bearing steel for low noise and long service life
• Double sealed to avoid contaminants entering and save lubricant
• Have a 12mm inner diameter, a 20mm outer diameter, and a 30mm height
• These linear motion bearings are very suitable for small hobby 12mm shaft/rod projects, such as 3D printers, engraving machines.
• These linear motion bearings have a total of 10 bearings, and you can use them for many different projects