Item Type: Linear Rail Guide Material: Bearing Steel Model: MTN9 Rail Height: Approx. 6.5mm/0.3in Rail Width: Approx. 9mm/0.4in Slider Thread: M3 Pilot Hole Spacing: Approx. 15mm/0.6in Application: For Ender 3, for Corexy, for Tronxy, for Delta Kossel 3D Printer Upgrading and CNC Machine Package List 1 x Linear Rail Guide 1This miniature linear guide rail has high accuracy, stable performance, and long service life. 2Professional guide rails and stoppers are made of bearing steel, which is sturdy and durable. 3This miniature linear guide rail is small in size and light in weight, suitable for most automation equipment. 4There are two rubber stoppers on each side of our linear guide to prevent the slider from slipping off. 5Suitable for Ender 3, for Corexy, for Tronxy, for Delta Kossel, 3D Printer Upgrading and CNC Machine