1PCS M6x30mm Nozzle Throat Stainless Steel Tube For 3D Printer Extruder 1.75mm,3D Printer Extruder 1.75mm 1PCS M6x30mm Nozzle Throat Stainless Steel Tube For, Material: Stainless Steel,Application:3D printer extruder, For 3D Printer Extruder 1.75mm 1PCS M6x30mm Nozzle Throat Stainless Steel Tube.