Specification AgeRangeDescription : adult Brand : HJZ-Drive BulletPoint1 : Model: SK8/SK10/SK12/SK/13/SK16/SK20/SK25/SK30/SK35/SK40/SK50/SK60 BulletPoint2 : Mainly used for the linear axis up, both sides of the wall can be bolted in machinery, so that the linear bearing or slider, in axis movement back and forth, and complete mechanical function. Rust protection,acid-resisting and easy to install and use. BulletPoint3 : Note: Please read the instruction to confirm it is the correct size the bearing you are looking for. BulletPoint4 : Material: Aluminum Alloy BulletPoint5 : Accept Customized Length and Assembly Color : Sfu1605 Kit ExternallyAssignedProductIdentifier : 8484844740582 ExternallyAssignedProductIdentifier1 : 0721498144204 ExternallyAssignedProductIdentifier2 : 721498144204 ItemForm : Rod ItemName : SK8 Linear Rod 8mm Rail Shaft Guide Support Stand for CNC Machine / 3D Printer (SK8-8mm bore) ItemPackageDimensions_Height : 42.291 centimeters ItemPackageDimensions_Length : 4.0894 centimeters ItemPackageDimensions_Width : 4.191 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : linear-motion-guides Manufacturer : HJZ-Drive Material : aluminium alloy ModelName : YYPTT ModelNumber : CO-2-VLXC-2040-T2-200-HEI NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : HJZ-Drive ProductDescription : Specification: Model: SK8/SK10/SK12/SK/13/SK16/SK20/SK25/SK30/SK35/SK40/SK50/SK60 Shaft ID: 8mm/10mm/12mm/13mm/16mm/20mm/25mm/30mm/35mm/40mm/50mm/60mm Material: Aluminum Alloy 100% Brand New and Original Note: Please read the instruction to confirm it is the correct size the bearing you are looking for. Mainly used for the linear axis up, both sides of the wall can be bolted in machinery, so that the linear bearing or slider, in axis movement back and forth, and complete mechanical function. Rust protection,acid-resisting and easy to install and use.