Features： 1、ADVANCED TECHNOLOGY: The bearings are made of bearing steel through special heat treatment process, advanced manufacturing equipment and technology 2、DURABLE TO USE: The service life of the bearing is greatly increased, and the cost can be saved for the equipment with high requirements and difficult to disassemble 3、FAST WITH LOW NOISE: Possess low noise, high speed, high bearing accuracy, fast running speed, low friction torsion, and good rotation 4、ACCURATE MOTION: This ball bearing is durable and provides accurate low friction linear motion, widely used in 3D printers and CNC machines 5、WIDE APPLICATION: Also suitable for pearl cotton equipment, agricultural machine, robotic arm, construction machinery, manipulator, accurate instrument, factory equipment, engraving machine, 3d printer, textile machinery, automation equipment Specification： Item Type: Cylinder Linear Motion Ball Bearing Model: LM16UU Material: Bearing steel Inner Diameter: Approx. 16mm / 0.63in Outer Diameter: Approx. 28mm / 1.1in Width: Approx. 37mm / 1.46in Package List： 2 x Cylinder Linear Motion Ball Bearing