T- 4pcs SBR20UU Open Linear Motion Bearing Sliding Block 3D Printer CNC Parts
Type: SBR20UU. Quantity: 4pcs. 4 x Linear Blocks. 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. If you are satisfied with our service, pls.