Features High-Rigidity Steel Ball Retainer: Ensures safe transportation and easy assembly for user peace of mind. Hardness HRC59.5: Provides exceptional durability and high-quality performance for longevity. Stainless Steel Construction: Hardened heat-treated materials ensure robustness for various applications. Versatile Industrial Use: Suitable for industrial robots, woodworking machinery, fitness equipment, and more. Professional Design: Facilitates easy replacement and installation, enhancing user convenience and efficiency. Features: 1、The slider has a high？rigidity steel ball retainer to ensure safety during transportation and the slider is easy to assemble and safe to use. 2、The hardness of rail is HRC59.5, which makes the product and high？quality. 3、The miniature guide rail series are made of stainless steel hardened heat？treated materials, whether it is a slide rail, a slider steel body and a ball. 4、They are used in industrial robots, plastic machinery, woodworking machinery, fitness equipment, accuracy printers, automatic cutting machines, etc. 5、With professional design and reasonable structure, the guide rail is easy to replace and install. Specification: Item Type: Linear Guide Rail Product Material: Stainless steel Product Model: MGW9C-300-2R Slider Size: Approx. 38.3x30x9mm / 1.5x1.2x0.4in Number of Sliders: 2 Slide Rail Size: Approx. 300mm / 11.8in Slide Rail Fixing Bolt Size: M3x8 Package List: 1 x Linear Guide Rail Package List 1 x Linear Guide Rail