Specification Brand : BELLA BAYS BulletPoint1 : 【In the Package】4pcs 39.37"(1000mm) 4040 V slot black European standard extruded profiles. BulletPoint2 : 【Strong/Sturdy and High Durability】Made with premium ASTM 6063 T5 aluminum alloy for strong and sturdy performance. Adapting the latest anodizing technology for smooth surface and long life span. BulletPoint3 : 【Prcision Extruding/Cutting and Pro Packaged】Applying high standard precision extruding and precision cutting process with ±0.5mm tolerance in length. Professionally packaged to aviod scratch and flaw during logistic. BulletPoint4 : 【Great Compatibility】Meeting European standard, easy installation with all 40 series fasteners and accessories like M8 T nuts, and pulley wheel. BulletPoint5 : 【Wide Application】3D printer, CNC, DIY project, lasers engraving machine, automation equipment, workbenche, stand, furniture, fitness equipment, precision printer, automatic cutting machine, automobile retrofit etc. Color : As Shown ExternallyAssignedProductIdentifier1 : 0630456596514 ExternallyAssignedProductIdentifier2 : 630456596514 ItemForm : Rod ItemName : BELLA BAYS 4pcs 39.37 inch 1000mm 4040 V Slot Aluminum Extrusion Profile European Standard Anodized Black Extruded Linear Rail Guide Frame for 3D Printer Laser Engraving Machine CNC Workbench DIY ItemPackageDimensions_Height : 101.6 centimeters ItemPackageDimensions_Length : 10.16 centimeters ItemPackageDimensions_Width : 10.16 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : linear-motion-guides Manufacturer : BELLA BAYS Material : Aluminum ModelNumber : BELLA BAYS-JAB91010001 NumberOfItems : 2 PartNumber : BELLA BAYS-JAB91010001 ProductDescription : Material: Made of C45 carbon steel, chromium plating surface, durable and corrosion-resistant. High Precision: The straightness is below 0.1/1000mm, and the hardness can reach 58-64 HRC. Smooth and Precise Linear Motion: Linear motion rods are commonly used in industries such as automation, robotics, machine tools, and 3D printing. They serve as support structures for linear bearings, allowing them to move smoothly and accurately Application: Use with linear support blocks and enclosed sliders. Suitable for 3D printers, CNC machines, robots, automated machinery, molding machines, engraving machines, etc.