Features: These liner-motion bearings are made of high quality aluminum alloy for low noise and long service life. Bearings have a 20mm inner diameter, a 39mm outer diameter, and a 11mm thickness. These are great for 20mm shaft/rod projects such as 3D printer, engraving machine. They are open type blocks, have high speed and high precision. There comes total 4 pieces bearings which you may use for many different projects.
Specifications:
Type: SBR20UU
Material: Aluminum alloy
Inner Diameter: 20mm/0.8in
Outer Diameter: 39mm/1.5in
Thickness: 11mm/0.4in
Quantity: 4pcs
Package Includes:
4 x Linear Blocks