SBR20UU Open Linear Bearing Sliding Block 3D Printer CNC 20x39x11mm

1 These liner-motion bearings are made of high quality aluminum alloy for low noise and long service life. 2 Bearings have a 20mm inner diameter, a 39mm outer diameter, and a 11mm thickness. 3 These are great for 20mm shaft/rod projects such as 3D printer, engraving machine. 4 They are open type blocks, have high speed and high precision. 5 There comes total 4 pieces bearings which you may use for many different projects.

What's in the box
4 x Linear Motion Bearing