[EXTRUDER NOZZLE] : stainless steel extruder nozzles adopt precision machining design, make the contact surface more smooth, effectively prevent leakage of nozzle, avoid nozzle blockage[DURABLE MATERIAL] : MK8 nozzle is made of stainless steel, which is harder and more durable than ordinary brass nozzles. It has good heat resistance, corrosion resistance and wear resistance. Suitable for 3D printing at high temperatures[APPLICABILITY & COMPATIBILITY] : Our nozzles are suitable for 3D printers Makerbot Creality CR-10, MK8 Makerbot Reprap Prusa I3, compatible with all 1.75mm PLA ABS 3D printers. Fits perfectly like the original[PRECISION PROCESSING] : The interior of the stainless steel nozzle is smooth without burrs, low viscosity coefficient, avoiding clogging during the exit process, and provides accurate and smooth extrusion