Feature: 1. Surface oxidation treatment, beautiful and corrosion resistant, prevent dust from entering and prolong service life. 2. Aluminum alloy material, strong bearing capacity, smoother moving, low friction, high rigidity and long life. 3. Linear bearing is widely applied to electronic equipment, packaging machinery, equipment, robots, tools, machinery, machine tools etc. 4. High quality bearings, exquisite workmanship, high accuracy, economical, easy to maintain replace. 5. The universal ball bearings is great for you to replace the damaged ball bearings in your devices to improve them efficiency and save energy. Specification: Item Type: SCS25UU Linear Bearing Material: Aluminum Alloy Inner Diameter: Approx. 25mm / 1in Length:Approx. 67mm / 2.6in Width: Approx. 76mm / 3in Height: Approx. 50mm / 2in. Package List: 1 x Bearing