Trianglelab ZS Nozzle Hardened steelCross SectionsThe cross sections of some products have not been processed If you do not believe our photos please cut our products and you will witness our high quality workmanship Features1 Nozzle is Hardened Steel Nickel Plated Hardened steel material is very resistant to wear and tear Printable with carbon fibre filled filament 2 Body is Copper Alloy Copper has more than 3x the thermal conductivity of brass The higher thermal conductivity It perfect for the high temperature printing that other nozzles can t handle SmoothThe inner wall is very smooth reduce blocking