Feature:1. Appearance oxidation treatment, beautiful and corrosion resistant, suitable for various electronic equipment, guide rods and pillars.2. Aluminum alloy linear ball bearing slider unit, aluminum alloy material, strong bearing capacity.3. The linear guide slider prevents dust from entering and prolongs the service life.4. TBR16UU Linear Guide Slider has the characteristics of high hardness, high strength, high lead, low noise and rust prevention.5. Glossy movement, low friction, good wear resistance, lightweight shell and chrome steel bearing ball.Specification:Item Type: TBR16UU Linear Guide SliderMaterial: Aluminum AlloyInner Diameter: Approx. 16mm / 0.63inLength: Approx. 63mm / 2.48inWidth: Approx. 42mm / 1.65inHeight: Approx. 30mm / 1.18in.Package List:1 x BearingNote:Please allow 02mm / 00.08in error due to manual measurement. Thanks for your understanding.