Package Includes: 5 x 0.4mm 3D printer hardened steel nozzles for Volcano Nozzle Specification: Material: hardened tool steel Out Thread: M6 Filament Diameter: 1.75mm Output Diameter: 0.4mm The nozzle surface with clear font will recognize the aperture size.Super long size, larger melt zone, let faster, stronger, and bigger to reduce the printing time.Features: The hardened steel nozzles have high hardness and high toughness, with good wear and heat resistance, can provide long use life than the normal brass nozzle, and use for most high-temperature 3D printer filaments.Compatible: For Volcano hotend 3D printer.The M6 thread nozzle kit is compatible with Anycubic Vyper, Kobra Max, Kobra Plus, Sidewinder X1, etc 1.75mm Filament 3D Printer, which works well for stock volcano nozzle.Note: After replacing the nozzle, please recalibrate the distance between the nozzle and build plate to ensure the quality of the print parts.