Features: Copper alloy has high thermal conductivity and high-speed printing, supporting a printing speed of 600mm/s High flow copper alloy has a thermal conductivity of 330W/m.k, uniform heating, and a volume twice that of a regular nozzle Strong thermal conductivity and high heat resistance. The roughness of the inner wall of the pipelineRa less than 0.4 reduces blockage High temperature resistance, fast thermal conductivity, and more stable printing The high hardness and wear-resistant surfaces copper platings process has good conductivity, anti-corrosion and rust prevention performances, greatly reducing the adhesion between the filaments and the nozzle, making extrusion smoother. Specifications: Material: Metal For Neptune4Plus/4Max Material Types：Brass/ ChromiumZirconium Copper/Hardened Steel Size:approx 0.2 0.4 0.6 0.8 1.0mm Quantity： 1PC Package Includes: 1PC Printer Nozzle note: Due to the problems of lighting effectsand shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.