Description 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. Model: LML12UU Inner diameter: 12mm Outside diameter: 21mm Length: 57mm Package includes: 1 x Linear Ball Beraing.
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