ITEM NAME:M6 0.4mm Stainless Steel Nozzle Extruder Nozzle Print Head For 1.75mm Filam J1J1 M6 0.4mm Stainless Steel Nozzle Extruder Nozzle Print Head For 1.75mm Filam J1J1 Material: stainless steel, durable and long life Installation: external M6 thread connection Compatible: all 1.75mm PLA abs printer Specification Thread type: M6 Input diameter: 1.75mm Output diameter: 0.4mm Quantity: 10 pieces color:silver Package include: 10x 0.4mm Stainless Steel 3D Printer Nozzle Note: These 3D printer heads are small parts, please keep them away from children to avoid swallow risk.