ITEM NAME:2 pcs LM4UU 4mm Bore Double Side Rubber Seal Linear Motion Ball Bearing B DJX.LM4UU 4mm Bore Double Side Rubber Seal Linear Motion. Model: LM4UU. Type: emulator. Great for linear motion on 3D printer, cnc, and other applications. 2 Linear Bearing. These ball bearing with two rubber dust sealed to prevent ingress of dirt, water and foreign matter.
