The nozzle and heat break adopts an all-metal integrated design, facilitating quick disassembly and convenient replacement. Upgraded 3d printer nozzles for K1C, for 3 V3, for 3 V3 Plus 3d printers. Enlarged nozzle chamber, achieving a maximum flow rate of up to 30mm/s, and supporting high-speed printing at 600 mm/s. Heat break made of titanium alloy reduces heat conduction. Nozzle composed of copper alloy and hardened steel supports printing filaments, such as PLA, ABS, PETG, TPU, PP, PC, PLA-, PA-, PET-. Nozzle kit includes three apertures: 0.4mm, 0.6mm, and 0.8mm to meet different printing needs. [Tight Fit, No Leakage, Perfect for Printers] Tightly fit joints effectively prevent filament leakage during printing. Inner hole roughness Ra Less than 0.4 ensures smooth filament feeding. No burrs at the opening, stable printing with reduced clogging. Colour:As Shown Material:Metal Package Contents: 1set * Quick Swap Nozzle Kit(4pcs) Only 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.