Model Number:Health Gear9xgsdzy8h2-1 Product Dimensions:25 x 5 x 2 cm; 217 Grams Material:Alloy Steel, Metal Item Weight:217 g Features:- Simple and easy to use- High accurate and stable performance.- Professional and technical rail and block, strong and durable.- Small size, light weight, suitable for most automatic equipment.- Slider could easily and lightly move.Specification:Material: MetalType: Slide guide railSlide track: Linear guide railAccuracy level: HLength(Optional): Approx. 300mm/11.8in, 400mm/15.7inInstallation screw size(not included): M6(Rail), M3(Block)Weight: 217-417gPackage List:1 x Linear Guide Rail1 x Slide Block About this item [Wide Application]: This linear rail and block are small and lightweight; Widely use in semiconductor manufacturing equipment, printed circuit boards, IC assembly equipment, robotic arms, precision measurement machine and other small linear motion device [High Accurate and Stable Performance]: This linear rail set adopts 4-point contact design, it can bear load from every direction, and has good strength and high accuracy [High Quality]: This linear slide rail is made of high quality bearing steel, professional and technical rail and block, strong and durable [Ball Retainer]: This linear rail set designed with ball retainer, which allows interchangeability in the case of small precision [Esay to Use]: Slide is attached and can slide smoothly, slider could easily and lightly move [Wide Application] [High Accurate and Stable Performance] [High Quality] [Ball Retainer] [Esay to Use]