Prusa Nozzle 5pcs 3D Printer Parts M6 Thread Brass Lettering Nozzle 1.75mm [M6 Brass Wear Resistant Nozzle MICRO SWISS BRASS PLATED WEAR RESISTANT NOZZLE FOR FLOWTECHâ„¢ HOTEND... Nickel plating has High hardness and wear resistance, Apply Nickel plating on the nozzle surface can reduce the friction, to make it smoother when inputing filament Nozzle size: 0.25mm, 0.4mm, 0.6mm, 0.8mm, M6 thread for 1.75mm filament use RepRap M6 Brass Nozzle 3mm - 0,2 mm - 1 pcs | 3D Prima - 3D-Printers The nozzle material is brass to keep good thermal conductivity, the Nickel coating can increase the lifetime of the nozzle and prevent the nozzle surface Oxidation FEL-PRO Fuel Injection Throttle Body Mounting Gasket 61643 - The Home Depot