ITEM NAME:2 pcs LM5UU 5x10x15mm Double Side Rubber Seal Linear Motion Ball Bearing D7G7 2 pcs LM5UU 5x10x15mm Double Side Rubber Seal Linear Motion Ball Bearing D7G7 Made of Bearing Steel material, Double Side Rubber Seal Linear Motion Ball Bearing 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 Model: LM5UU Outside Diameter:10mm Inside Diameter: 5mm Length: 15mm Weight: 6g Package Content: 2 pcs 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: LM5UU. Made of Bearing Steel material, Double Side Rubber Seal Linear Motion Ball Bearing. 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.