4PCs LM12UU Linear Ball Bearing Nickel Plated 12mm x 21mm x 30mm for 12mm Linear Motion Shaft Rod for 3D Printer and CNC Machine LM12UU(4pcs) industrial_Dec2022 convenient for operation

convenient for operation

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4PCs LM12UU Linear Ball Bearing Nickel Plated 12mm x 21mm x 30mm for 12mm Linear Motion Shaft Rod for 3D Printer and CNC Machine LM12UU(4pcs) industrial_Dec2022 convenient for operation4PCs LM12UU Linear Ball Bearing Nickel Plated 12mm x 21mm x 30mm for 12mm Linear Motion Shaft Rod for 3D Printer and CNC Machine The surface has been Nickel Plated for anti rust purpose, so it looks brighter than ordinary linear bearings. Packing list: 4PCs LM12UU linear motion bearing Product Features Made from carbon steel (1045), rigid and wear resistant The surface has been Nickel Plated for anti rust purpose, brighter than ordinary linear