Feature:1. Automatic Aligning Ability: This linear motion bearing block adopts high position accuracy and comprehensive sealing system. With high load bearing capacity and automatic aligning ability.2. Retainer Structure: Linear motion rail block is using steel wire retainer structure, effectively prevent steel balls falling off. Practical and safe.3. High Speed Low Noise: Linear motion rail bearing block is in high speed and low noise, low friction and is flexible.4. Simple Installation: Linear motion block has no burr and simple to install, friendly to novices, also fluent sliding without sticking.5. Alloy Steel and Bearing Steel Material: The bearing slide block is made of bearing steel and alloy steel, which is perfect for 3D printing, wind, solar, CNC, robot, automation and other equipment.Specification:Item Type: 3D Printing Bearing Slide BlockMaterial: Bearing Steel, Alloy SteelUse: Widely used in various industrial fields such as machine tools, engineering machinery, robots, reducers, steel, metallurgy, textile, mining, printing, etc..Package List:1 x Linear Motion Rail Bearing Block