Features Premium Metal Material: 3D printer all metal(aluminum alloy, brass, carbon steel, stainless steel) feeding parts possess good quality and durable. Convenient and Practical: The improved design can provide more stable and long lasting feeding service for 3D printers, very practical. For 1.75MM Filament: For MK8 extruder feed kit is suitable for 1.75mm filament, versatile with good capability, more convenient. Scope of Application: Applicable to for ET4, for ET4PRO, for ET5, for ET5PRO, for Ender 3 3Pro CR 10, CR 10 S4, CR 10 S5 and other models. Exchanged Installation Positions: The air pipe joint can be installed on both the metal fixing block and the metal pressing block. At the same time, the installation positions of the fixing block and the pressing block can be exchanged, which can be adap. Specification: Item Type: Extruder Feeding Kit Product Material: Aluminum alloy, brass, carbon steel, stainless steel Product Use: Used for 3D printer feeding Product Applicable Consumable Size: Approx. 1.75mm / 0.07in Applicable Models: For Anet ET4, for ET4PRO, for ET5, for ET5PRO, for Creality Ender 3 3Pro CR 10, CR 10 S4, CR 10 S5 and other models Package List: 2 x Extruder Accessories 3 x Screw 1 x Spring 1 x Nut Package List 2 x Extruder Accessories 3 x Screw 1 x Spring 1 x Nut