Item Type: Linear Rail Guide _x000D_ Material: Bearing Steel_x000D_ Model: MTN9_x000D_ Rail Height: Approx. 6.5mm/0.3in_x000D_ Rail Width: Approx. 9mm/0.4in_x000D_ Slider Thread: M3_x000D_ Pilot Hole Spacing: Approx. 15mm/0.6in_x000D_ Application: For Ender 3, for Corexy, for Tronxy, for Delta Kossel 3D Printer Upgrading and CNC Machine 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 Machine1 x Linear Rail Guide