3D Printer Part Upgrade X-axis Linear Rail Guide Kit for Neptune 4 3 pro

Features: 1, Dual linear rails,more stable than single rail version and wheel movement system. 2., The linear guide rail with smooth and low-frictionmotion characteristics reduces energy loss andmechanical wear 3, No lose in Z axis height,guaranteed original print size 4, Use as many original plate and parts as possible. Suitable for:Neptune3/3Pro/Neptune 4 MGN12H Linear Guide (315mm) * 1 Extruder sheet metal * 1 Right sheet metal * 1 Left sheet metal * 1 Hexagon countersunk head screws * 4 Cylindrical Hexagon socket screws *7 Round cup Hexagon socket screws *5