Fangrui Product Details Compatible Models: This Quick-swap Nozzle Kit Is Compatible With For 3 V3, K1c 3d Printers And Contains 2 X 0.4mm Nozzles, 1 X 0.6mm Nozzle And 1 X 0.8mm Nozzle, 2 X Silicone Sleeves. Upgraded Material: Suitable For Printing A Variety Of Filaments; The Heatbreak Is Made Of Titanium Alloy, Which Reduces Heat Conduction; The Nozzle Is Composed Of Copper Alloy For Body And Hardened Steel For Tip, Support To Print Various Filaments. Precision Craftsmanship: Tight Fit, No Leakage, Smooth Inner Walls, No Blockage; Compatible With For K1c And 3 V3 3d Printer And Ceramic Heating Block Quick-swap Nozzle Kit. High Flow: Supporting High-speed Printing At 600mm/s, Enlarged Nozzle Chamber, Achieving A Maximum Flow Rate Of Up To 30 Mm Wide Compatibility: The Nozzle Is Composed Of Copper Alloy And Hardened Steel, Supporting The Printing Of Various Filaments, Such As Pla, Abs, Petg, Tpu, Pp, Pc, Pla-, Pa-, And Pet- Please Note:the Physical Slightly Color Difference Or Difference, Does Not Affect The Use, Please Do Not