ITEM NAME:LM35UU 35mmx52mmx70mm Double Side Rubber Seal Linear Motion Ball Bearing Bu D5A1 LM35UU 35mmx52mmx70mm Double Side Rubber Seal Linear Motion Ball Bearing Bu D5A1 Made of Bearing Steel material, Double Side Rubber Seal Linear Motion Ball Bearing Bushing. Great for linear motion on 3D printer, cnc, and other applications. These ball bearing are fitted with two rubber dust sealed to prevent ingress of dirt, water and foreign matter. Bearings may require lubrication and break in period. Smooth moving, low friction, high rigidity and long life. Economical, easy to maintain replace. Product Name: Linear Bearing Material: Bearing Steel, Rubber Color: Silver Tone Weight: 357g Model: LM35UU Outside Diameter: 52mm Inside Diameter: 35mm Length: 70mm Package Content: 1 x Linear Bearing Only the above package content, other products are not included. Note: Light shooting 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..Model: LM35UU. Made of Bearing Steel material, Double Side Rubber Seal Linear Motion Ball Bearing Bushing. Great for linear motion on 3D printer, cnc, and other applications. These ball bearing are fitted with two rubber dust sealed to prevent ingress of dirt, water and foreign matter.