Specification Brand : TEN-HIGH BulletPoint1 : Rail Guide Length: 450mm(customized length product is accepted); Block: 2PCS SGB15-4UU carriage block BulletPoint2 : The rectangle wheel linear rail is used for general machine tools, 3D printing BulletPoint3 : The surface of steel shaft is hardened specially for reduction of wear due to grinding BulletPoint4 : High strength,high precision,slide smooth and insure high speed slide with heavy load BulletPoint5 : The products were designed very hard and it can use as trestle and chassis which were big reduce the costs for designing and manufacturing so as to show its best effects ExternallyAssignedProductIdentifier1 : 0658107926404 ExternallyAssignedProductIdentifier2 : 658107926404 IncludedComponents : HG rail 2pcs with 2pcs bearing Slider Block ItemForm : Rod ItemName : TEN-HIGH Double Axis Linear Rail with Black Oxide Layer Treatment, 450mm SGR15 Linear Rail + 2 x SGB15-4UU Adjustable Locking Carriage Block for 3D Printer and CNC Machine. ItemPackageDimensions_Height : 17 centimeters ItemPackageDimensions_Length : 3.6 centimeters ItemPackageDimensions_Width : 14.9 centimeters ItemTypeKeyword : linear-motion-guides Manufacturer : TEN-HIGH Material : Carbon Steel 1045 ModelNumber : MS-GZ-D20-L1500 NumberOfItems : 1 PartNumber : TH-SGR15-450-2SGB15-4UU-BS-S ProductDescription : Specification: Brand name:TEN-HIGH Color: Black Body material: Aluminium Round shaft material: Hardened steel This item include: 1pcs SGR15 450mm dual-shaft linear rail with Black oxide layer treatment 2pcs SGB15-4UU Bearing Block Attention: We can cut any length rail according to customer requirement,if you have demand,please contact us.