【Durable Material】MK8 extruder nozzles made of paramount hardened tungsten steel, high hardness and high toughness, have good resistance for wear, heat and corrosion, can be used more longer than the normal brass nozzle. 【High Temperature Resistant】3D Printer Nozzles suitable for 3D printing at high temperature, the highest temperature up to 450℃, compatible with PLA, ABS, carbon fiber and other materials. 【Precision And Finishing Process】Our hardened steel nozzles adopt the centering CNC precision automatic lathe design, ensures that the input and output holes are concentric and nozzle interior is smooth without burrs. The nozzle can maintain a stable temperature in printing process, so the filament can flow out evenly. At the same printing accuracy, with a higher printing speed. 【Compatibility】 Our tungsten nozzles fit for most FDM printer, suitable for 3D Printer Makerbot Ender 3 series, CR-10 series 3D printer and MK8 Makerbot Reprap Prusa I3, and all 1.75mm PLA ABS 3D printer are compatible. 【Package Content】You will receive 5 pcs of black MK8 nozzles of different size: 0.2mm/0.3mm/0.4mm/0.5mm/0.6mm, sufficient and different sizes can meet your daily replacement needs.