Features 【Durable and Long-lasting】 Crafted with precision and made of premium-grade bearing steel, these LM6UU 6mm linear motion ball bearings ensure low noise and a long service life. Improve the efficiency and energy-saving of your devices by replacing damaged ball bearings. 【Sealed and Dustproof】 Double-sealed design prevents contaminants, water, and debris from entering, ensuring optimal performance and extending the lifespan of your equipment. Save on lubricant usage and maintain a clean working environment. 【Versatile Applications】 Perfect for small hobby projects such as 3D printers, engraving machines, CNC, and more. These 8pcs linear motion bearing are compatible with 6mm shaft rods, providing smooth and precise motion. 【Easy Installation】 With a specification of 6x12x19mm, these 6mm(0.24 inch) inner diameter, 12mm(0.47 inch) outer diameter, and 19mm(0.75 inch) height linear bearings are easy to install and replace. Enhance the performance of your machinery with these high-quality glide bearings. 【Reliable Performance】 100% brand new and high quality, these 6mm linear motion ball bearings offer excellent support to mechanical rotating bodies, reducing friction and ensuring accurate rotation. Trust in their durability and efficiency. Features:100% Brand new and high quality. These liner-motion bearings are made of high quality bearing steel for low noise and long service life.They are double sealed to avoid contaminants entering and save lubricant.Bearings have a 6mm inner diameter, a 12mm outer diameter, and a 19mm height.These are great for small hobby 6mm shaft/rod projects such as 3D printer, engraving machine. Specifications:Type: LM6UUMaterial: Bearing steelInner Diameter: 6mm / 0.24 inchOuter Diameter: 12mm / 0.47inchHeight: 19mm / 0.75inchQuantity: 8pcs Package Includes:8 x Bearings Package List