DollaTek 10pcs LM6UU 6x12x19mm Double Side Rubber Seal Linear Motion Ball Bearing

Double Side Rubber Seal Linear Motion Ball Bearing . Great for linear motion on 3D printer, cnc, and other applications. These ball bearing with two rubber dust sealed to prevent ingress of dirt, water and foreign matter. Smooth moving, low friction, high rigidity and long life. Economical, easy to maintain replace.