Specification AgeRangeDescription : adult Brand : HARFINGTON BulletPoint : Origin:Mainland China BulletPoint1 : Size - 12mm x 400mm (D*L). High precision with a tolerance of 0.005mm. Hardness up to 60-64 HRC. High straightness, ≤0.5/1000μm. BulletPoint2 : Material - Made of quality bearing steel, chrome-plated surface for durability and corrosion resistance. Mirror-polished for a smooth surface. BulletPoint3 : Feature - Provides low friction and high precision motion, ensuring smooth and stable linear movement while reducing wear and ensuring accurate positioning. BulletPoint4 : Application - Use with linear support blocks and enclosed sliders. Suitable for 3D printers, CNC machines, robots, automated machinery, molding machines, engraving machines, etc. BulletPoint5 : Note - Easy installation with chamfered ends to prevent fingers from getting hurt during installation. Color : One Color Department : Unisex Adult ExternallyAssignedProductIdentifier : 9463745658867 ExternallyAssignedProductIdentifier1 : 0765026504689 ExternallyAssignedProductIdentifier2 : 765026504689 IncludedComponents : MGN12R+MGN12H 250 ItemForm : Rod ItemName : HARFINGTON 2pcs Linear Motion Rod Shaft Guide 12mm x 400mm Bearing Steel Chrome Plated Smooth Hardened Rod High Precision Linear Motion Shaft Linear Rail for 3D Printer CNC DIY Tools ItemPackageDimensions_Height : 0.67 inches ItemPackageDimensions_Length : 16.14 inches ItemPackageDimensions_Width : 2.36 inches ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : linear-motion-guides Manufacturer : HARFINGTON Material : Alloy Steel ModelName : DAVBIR ModelNumber : DAVBIR MountingType : Side Mount NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : hta230818hh000454 ProductDescription : Made of quality bearing steel, chrome-plated surface for durability and corrosion resistance. Mirror-polished for a smooth surface. Provides low friction and high precision motion, ensuring smooth and stable linear movement while reducing wear and ensuring accurate positioning. Use with linear support blocks and enclosed sliders. Suitable for 3D printers, CNC machines, robots, automated machinery, molding machines, engraving machines, etc.