for High Speed Printing: The thermal conductivity of hardened steel is as high as 330W/mk, ensuring that the nozzle is heated more evenly. The volume is twice as as ordinary nozzles, supporting high-speed printing speed of 600mmUniform Nickel Plating, Smoother Extrusion: The nickel-plated layer on the surface greatly reduce the adhesion of filaments to the nozzle and smoother extrusion. x Applicable to most FDM materials such as PLA, ABS, , TPE, TPU, PC, etc., And , PEKK, PEI, PSU, PPSU and other high temperature filamentsHardened Steel Resists Corrosion for Longer Service Life: Advanced heat treatment process and better are combined to prolong the service life of the nozzle Applicable to most FDM materials such as PLA, ABS, , TPE, TPU, PC, etc., and composite filaments with grinding additives such as carbon fiber, glass fiber, steel, wood, boron carbide, tungsten, pigments, etc.Premium Materials Handle High Temperature Filaments: fast heating of the high-temperature filaments and continuous printing x Copper alloy high temperature resistance up to 500, hardened steel high temperature resistance up to 450Specification: 0.4/0.6/0.8mmMaterial: Chrome Zirconium Copper / hard steelcolour: blackPackage Contents: 3 x NozzleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.