Crafted from chrome steel for excellent wear resistance, high precision, and robust strength. Effortless maintenance and replacement. Experience smooth movement, low friction, high rigidity, and extended lifespan. Ideal for 3D printers, CNC machines, and various other applications. Package includes: 1 round flanged linear bearing. Model: LMF12UU. Features: Sealed linear motion round flanged ball bearing on both sides. Chrome steel shell and ball bearings ensure great wear resistance, high precision, and good strength. Enjoy smooth motion, low friction, high rigidity, and a long service life. Perfect for all types of electronic equipment, guide rods, drive shafts, and columns. Key Features: The LMFUU series offers round flanged linear ball bearings with seals on both sides to prevent dirt, water, and foreign material ingress. A linear bearing, also known as a ball bearing ring or shaft guide, is a low-friction support element commonly used for mechanical parts requiring linear motion. When paired with a linear motion shaft, the recirculating balls provide unlimited low-friction movement, operating effectively up to 80 degrees Celsius. Ideal for 3D printers, CNC machines, and other applications. Model: LMF12UU. Contents: 1 linear round flanged bearing. Your satisfaction is our top priority. We are committed to providing you with the best service. If you encounter any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately for the best possible solution!