1pcs MK8 High quality Titanium alloy nozzle TC4 0.4mm Fit PETG ABS PET PEEK NYLON High TemperatureFor 1.75mm 3D printer Titanium alloy type : Durable, non-stick, high temperature performance nozzles Made of Titanium alloy, very temperature resilient, making it perfect for the high-temperature 3D printing that other nozzles can't handle. And we make surface inside very smooth(not cheap nozzle in market),so you can print without worry about jam.