Specification Brand : Fafeicy BulletPoint1 : Lubrication System: Linear slide rail has lubrication system, lubrication oil can be easily put into the oil inlet on the side. BulletPoint2 : Great vaule for money: Adopting 4-point design, it can bear load from every direction, and has good strength and high accuracy. Designed with ball retainer, which allows interchangeability in the case of small precision. BulletPoint3 : We strive to provide you with the highest quality product and the best customer experience, if you're not entirely satisfied, please just feel to us at any time. BulletPoint4 : Meticulously made: Linear bearings made of quality bearing steel. Beautiful and anti-rust surface treatment ensures durability, high hardness, and stiffness. Smooth running, low noise and non-pollution. BulletPoint5 : Ingenuity craftsmanship: Linear guides and rails provide a smooth, precision, guiding surface on which the rolling of a linear bearing rides. It helps to build an economical linear guiding system and designed to achieve high precision linear motion, low friction coefficient. Color : Silver ExternallyAssignedProductIdentifier1 : 0764331171357 ExternallyAssignedProductIdentifier2 : 764331171357 ItemForm : Rod ItemName : Linear Slide Rail, 1pc LWL7B Miniature Linear Rail 7mm Width and Slide Block Linear Motion Guides(40mm), Linear Guides, Linear Motion Guides (40mm) ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 5 centimeters ItemPackageDimensions_Width : 5 centimeters ItemPackageQuantity : 2 ItemShape : Rectangular ItemTypeKeyword : linear-motion-guides Manufacturer : Fafeicy Material : metal Material1 : Aluminum Material2 : Carbon Steel Material3 : steel ModelName : Fafeicyptse7iohvg-01 ModelNumber : Fafeicyptse7iohvg-01 MountingType : Side Mount NumberOfItems : 1 PartNumber : Fafeicyptse7iohvg-01 ProductDescription : Specifications: Model: LML7B Type: Slide rail Slide Track: Linear rail Length: 40mm/1.6in, 55mm/2.2in, 70mm/2.8in (Optional) Width: 7mm/0.5in Material: Bearing steel Accuracy Class: H Block Fixation Method: Locked Weight: 19g~27g(approx.) Package Includes: 1 x Linear Rail 1 x Linear Block Note: Please allow small size error due to manual measurement. Thanks for your understanding.