Specification Brand : N/N BulletPoint1 : The linear motion rod is made of carbon steel substrate (GCr15),after high frequency hardening and centerless grinding BulletPoint2 : Widely applied in CNC, 3D printer, automatic machinery,injection molding machine, engraving machine,etc.especially in bearing purpose. BulletPoint3 : The surface has been chrome plated to enhance the hardness.Due to the hard surface, they can extend the service life of the equipment. BulletPoint4 : Beveled at both ends for easy installation and prevents your hands from being injured during installation. BulletPoint5 : Metric G6 tolerance, surface roughness ra0.3-ra0.5, hardness about HRC58-64, hardening depth:0.8-2.5MM straightness≤0.1/1000MM,chrome thickness:0.015MM-0.02MM, roundness: no more than 3μm. Color : Silver ExternallyAssignedProductIdentifier1 : 784112860263 ExternallyAssignedProductIdentifier2 : 0784112860263 GradeRating : Industrial ItemForm : Rod ItemName : Linear Motion Rods,2PCS 12mm x 600mm (0.472 x 23.622 inches) Case Hardened Chrome Linear Rail Shaft Guide for 3D Printer,DIY,CNC Metric G6 Tolerance ItemPackageDimensions_Height : 60.8 centimeters ItemPackageDimensions_Length : 3.1 centimeters ItemPackageDimensions_Width : 4.5 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : linear-motion-guides Manufacturer : N/N Material : Carbon Steel ModelNumber : 1 NumberOfBoxes : 1 NumberOfItems : 2 PartNumber : 1 ProductDescription : 2PCS 12MMx600MM ProductSiteLaunchDate : 2020-11-23T13:53:45.975Z Size : 600mm Style : Diameter 12mm SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 26111500