Specification Brand : Creabygirls BulletPoint1 : This linear rail set includes 2 pieces of 2000mm/70.8 inch long SBR16 rail shafts and 4 SBR16UU blocks, sliding blocks to be used cooperatively with rails, smooth sliding provided by the inside linear bearing. BulletPoint2 : CNC parts linear rails are made of carbon steel, linear Bearings made of quality bearing steel with aluminum alloy housing. Surface chrome plating treatment beautiful anti-rust, high hardness, more durable. BulletPoint3 : Industry-standard SBR block with high-precision linear bearing inside. The adjustment handle can adjust the tightness of the slider, standardized processing, ideal for positioning the guide rail. BulletPoint4 : Perfect combination of main axle bearing rail and aluminum alloy support, which nicely stabilizes the original rail. Industrial-grade standard SBR block, with high precision linear bearing inside. BulletPoint5 : The linear guide rail is widely used in the automation machinery such as DIY CNC routers, lathes, machine tools, bending machines, laser welding machines, etc. Also applicable for large-scale transmission equipment, including industrial robots, cracker machines. Color : As Shown FinishType : Finish IncludedComponents : inc ItemDisplayWeight : 500 grams ItemName : 2 x Linear Rails SBR16 1800mm(70.8") + 4 x SBR16UU Linear Bearing Slide Blocks, Linear Slide Rail Shaft Linear Guide Rails for Automated Machines Equipments and DIY CNC Routers ItemPackageDimensions_Height : 7 centimeters ItemPackageDimensions_Length : 200 centimeters ItemPackageDimensions_Width : 8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : linear-motion-guides Manufacturer : Creabygirls Material : Carbon Steel ModelNumber : 2D878NY441E17AR09K4UIU9 NumberOfItems : 1 PartNumber : 2D878NY441E17AR09K4UIU9 PowerSourceType : PowerSource ProductDescription : 2000mm Linear Rail Slider Set:2Pcs SBR16-2000mm(78.74inch) Linear Rail + 4Pcs SBR16UU Blocks Bearing.