Features WIDE APPLICATION: Products are widely used in wind power generation, solar energy equipment, new energy equipment, high speed rail equipment, electronic equipment, CNC machine tools, woodworking machinery, handling, transportation machinery, accuracy mea EASY REPLACEMENT: The linear guide rail is interchangeable, and the slider or guide rail or even the linear guide rail group can be replaced to obtain accuracy guidance again. ALLOY STEEL MATERIAL: Made of premium alloy steel material, this linear guide rail and slide block set can bear strong load. CENTERING CAPABILITY: With automatic centering function, this linear motion set can achieve μm level accurate positioning. IDEAL REPLACEMENT: Wonderful replacement for the old and damaged parts, fine workmanship, attention to details, helps you improve the performance of your machine! Specification: Item Type: Guide Rail Slide Block Set Mode: SBR12 400 Material: Alloy Steel, Aluminum Alloy Application: Widely used in various industrial fields such as machine tools, construction machinery, robots, speed reducers, steel, metallurgy, textiles, mining, printing, aerospace, and so on. Package List: 2 x Guide Rail  4 x Slide Block  Package List 2 x Guide Rail 4 x Slide Block