Feature: 1. Applicable Printer: The X axes linear rail is suitable for Neptune 3, for Neptune Pro, and for Neptune 4 and other 3D printer, with good compatibility and strong practicality. 2. Durable Material: The linear motion guide rail is made of high carbon chromium steel material, which has strong wear resistance, high strength, and long service life. 3. Stable Movement: This linear motion guide rail has stable and low friction movement characteristics, which can effectively reduce energy loss and mechanical wear. 4. Efficient Printing: The 3D printer rail has high rigidity and stability, maintaining excellent accuracy during motion, reducing printing vibration, improving printing quality. 5. Simple Operation: This kit includes linear rail, sliders, screws, and other accessories, making it convenient to install and operate, and used for various 3D printing projects. Specification: Item Type: X Axes Linear Rail Material: High Carbon Chromium Steel Applicable 3D Printer Model: For Neptune 3, for Neptune Pro, for Neptune 4. Package List: 1 x Linear Rail 3 x Sliders 12 x Screws 1 x User Manual 5 x Accessories