CNC Linear Rail Kit: This set includes one linear motion guide rail with a 600 mm effective stroke, compatible with engraving machines, CNC milling machines, and 3D printers Rust & Corrosion Protection: Made with a PU belt, aluminum alloy slide block, and a NEMA 34 stepper motor. Features a 10 m electroplated coating to resist corrosion and rust even in humid environments like basements Reliable Load Capacity: This linear guide rail supports both horizontal and vertical movement with stability. Handles up to 40 kg horizontally and 20 kg vertically High Precision, No Deviation: Provides ±0.05 mm repeatability, our linear motion guide rail features precisely machined mounting holes and spacing. It ensures accurate long-stroke motion and easy installation Installation Made Easy: No extra installation tools are required. Designed with simplicity in mind, this linear motion guide rail kit installs quickly. It is suitable for DIY assembly or rail replacements