Features: Three materials available: high-temperature resistance, wear and explosion-resistance, and good thermal conductivity. The joint is tightly fitted and contact surfaces are flat, effectively preventing the printing head from leaking material. Round feed chamfer aperture with smooth nozzle surfaces, effectively reducing resistance, avoiding issues such as unsmooth wire discharge, and less prone to clogging. Inner wall is smooth and free of burrs, with a low viscosity coefficient for smoother wire discharge. One-piece molding process with fine craftsmanship, compatible with AnkerMake 3D printers. Specifications: Material: Metal Type: Stainless Steel, Hard Steel, Brass (optional) Nozzle Diameter: 0.4mm Filament Diameter: 1.75mm Compatibility: Suitable for AnkerMake 3D Printer Note: Please allow 0–1 cm error due to manual measurement. Please allow slight color variation due to different display resolutions. Package Includes: 1 x Extruder Print Head