8PCS LM6UU Linear Ball Bearings, 3D Printer CNC Parts, 6mm Bore Dia 12mm OD Linear Bearings Set, Steel Bearing Bushing for CNC Machine Engraving Machine bee [Safe to Use]: The shell

[Safe to Use]: The shell is made of stainless steel and durable

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8PCS LM6UU Linear Ball Bearings, 3D Printer CNC Parts, 6mm Bore Dia 12mm OD Linear Bearings Set, Steel Bearing Bushing for CNC Machine Engraving Machine bee [Safe to Use]: The shell8PCS LM6UU Linear Ball Bearings, 3D Printer CNC Parts, 6mm Bore Dia 12mm OD Linear Bearings Set, Steel Bearing Bushing for CNC Machine Engraving Machine Specifications: Type: LM6UUMaterial: Bearing steelInner Diameter: 6mm 0. 24 inchOuter Diameter: 12mm 0. 47inchHeight: 19mm 0. 75inchQuantity: 8pcsPackage Includes: 8 x Bearings Product Features Double Seal DesignThe wire bearing adopts a double seal design to prevent dirt, water and foreign matter