Package with 10pcs 0.4mm Hardened Steel MK8 Nozzles MK8 Hardened Steel Nozzles with M6 Thread Compatible with Most 1.75mm 3D Printer Filaments MK8 Hardened Steel Nozzles Compatible with MK8 hotend 3D Printers, such as Ender-2/Ender-3/Ender-3 pro/Ender-5, also compatible with Creality CR-10 all-metal hotend, Prusa i3, Anet A8, Reprap, etc. The inner wall of MK8 hardened steel nozzles is much smoother and has no burrs, good abrasion resistance, heat resistance and corrosion resistance, provide you with precise and smooth extrusion