1. LMK16UU Flange Linear Bearing. Low Coefficient of Friction. 2. Reliable friction characteristics that do not increase over the life of the bearing. 3. Great for you to replace the Ball Bearings in your devices to improve them efficiency and save energy. 4. Widely used in home appliances, industrial, low noise and high speed electric motors, construction machinery, automotive components, pumps, and machinery. 5. Smooth moving, low friction, high rigidity and long life. Economical, easy to maintain and replace.<br><br>Specifications: Product Name: Linear Bearing Outside Diameter: (Shaft)28mm Inside Diameter: 16mm Weight: 186g Model: LMK16UU Flange Size: 37 x 37 x 6mm(L*W*T) Mount Hole Diameter: 4.5mm Mount Hole Distance: 27 x 27mm(L*W) Total Length: 37mm colour:Silver Material:Bearing steel + nylon<br><br>Package Contents: 2 * Flange Linear Motion Bushing Ball Bearing<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.