Feature 1APPLICABLE MODEL: Upgrade Y axes linear slide rail kit, suitable for Neptune 3, for Neptune Pro, for Neptune 4, for Ender 3, for Ender 3 Pro V2, for Ender 3 S1, for Ender 3 S1 Pro. 2STABLE OPERATION: This linear guide rail has high rigidity and stability, ensuring excellent accuracy during movement, reducing printing vibration, and improving printing quality. 3HIGH EFFICIENCY: This linear motion slide rail has good smoothness and low friction, reducing energy loss and mechanical wear, allowing 3D printer to work at higher speed. 4EXCELLENT STEEL: This 3D printer rail is made of high carbon chromium steel, which has strong wear resistance, high hardness, stable movement, low noise, and uniform force. 5INCLUDED PARTS: Including 2pcs rails, 6 sliding blocks, a pack screws, and other accessories, this 3D printer rail kit is easy to install and use, greatly improving printing efficiency.Item Type: Guide Rail KitMaterial: High Carbon Chromium SteelApplicable 3D Printer Model: For Neptune 3, for Neptune Pro, for Neptune 4, for Ender 3, for Ender 3 Pro V2, for Ender 3 S1, for Ender 3 S1 Pro .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List2 x Guide Rails 6 xSlide Blocks1 Pack Screw Accessories 2 xAccessories