Specification AgeRangeDescription : adult Brand : Mssoomm BulletPoint : rail BulletPoint1 : Unlike solid linear shaft rod optical shafts, hollow linear rod can reduce weight and improve bending and torsional resistance, with better strength-to-density ratio and specific stiffness, suitable for CNC, 3D printer, automatic machinery, injection molding machine, engraving machine BulletPoint2 : Tolerance: Metric h7, hardness about HRC 58-60, hardening depth: 0.8-3mm, straightness≤ 0.07/1000mm, chrome thickness: 0.014mm-0.02mm, roundness: no more than 3μm, surface roughness: ra0.1m - 0.35m BulletPoint3 : Adapting C45 high quality carbon steel, high frequency quenching, surface chromium plating. Using mirror polishing technology, more durable and corrosion-resistant. BulletPoint4 : Humanization Design: Chamfer on both ends, easier to install linear bearings and won't hurt fingers when installing it BulletPoint5 : We can customize the linear rail, including the length and end processing, showed as image 3.With full series of diameters: 5, 6, 8, 10, 12, 13, 14, 16, 20, 25, 30, 35, 40, 50mm and so on, any special needs, please give us message Color : One Color ExternallyAssignedProductIdentifier : 6189479637802 ItemName : Mssoomm Linear Motion Shaft Rod Guide D 25mm x L 19.69 inch / 500mm 3Pcs, Hollow Rod D 25mm Inner Hole 14mm Smooth Steel ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : linear-motion-guides Manufacturer : Mssoomm Material : Carbon Steel ModelName : RJQCUASF ModelNumber : RJQCUASF NumberOfBoxes : 1 NumberOfItems : 3 PartNumber : MS-3-KXGZ-D25-ID14-L500 ProductDescription : Specifications: Brand: Mssoomm Material: High Quality Carbon Steel (C45#) ProductSiteLaunchDate : 2024-10-04T14:05:59.029Z Size : C Y-Axis Gear Base Style : 1000mm UnitCount : 1 UnspscCode : 24102000