Check the listing for details. SBR-UU Open Linear Motion Ball Bearing Slide Pillow Block 12mm~50mm 3D Printer. Condition: New. Listed at 6.45 USD. SBR12UU~SBR50UU Linear Motion 12~50mm Shaft Sliding Bearing Block Product Description: Material: Aluminum Type: Open Linear Motion Bearing Slide Unit Model: ordinary Shaft Dia.=12~50 mm Bearings are for use with round end-supported shafts. All have end seals to keep lubricant in and dirt out. Linear Ball Bearing Slide Block Units complementary to linear ball bearings. They usually consist of a light-weight, aluminium housing to provide high strength and stiffness. Compact design with High load carrying capacity, Linear Motion Bearing Unit is a rolling friction supporting element that usually used for linear motion mechanical parts with small friction. Coordinate with Linear Motion Shaft, recirculating balls provide unlimited stroke at low friction movement, permit temperature within 80 degree Celsius. It is great for 3D printer, CNC, and other applications. Remarks: If you have special needs, please contact us, we can customize according to your needs! Package Include:According to your Choose!If you need to purchase more than the inventory, please contact customer service to buy! On Jun 18, 2024 at 16:08:18 PDT, seller added the following information: