Features: 1.Widely Comaptible: These 3D printer extruder nozzles are specially designed for K1, for K1 Maximum, for CR M4, for Vyper, for Kobra, for Sovol Sv06 Plus, for Sv07 3D printers. 2.Smoothing Extrusion: These extruder nozzles for CR K1 ensures smoothing extrusion with variety materials,such as PLA, ABS, PETG, TPE, TPU, PC, and high temperature filaments PEEK, PEKK, PEI, PSU and PPSU etc. 3.Durable Material: These extruder nozzles for CR K1 are made of premium and hardened metal materials for a longer service life and high speed printing. 4.High Accuracy: These extruder nozzles for CR M4 are manufactured by CNC to ensure that the input hole and the output hole are concentric, the unique molding technology ensures the inside of the nozzle is smoothing and burrless, which not only reduces resistance and avoids filament blockage. 5.Low Resistance: These 3D printer extruder nozzles adopt chamfering cutting, which can reduce the resistance of the corners to the filaments to ensure smoothing feeding and prevent clogging. specification:Item Type: Extruder Nozzles for CR K1 Material: Metal Compatibility: Designed for K1, for K1 Maximum, for CR M4, for Vyper, for Kobra, for Sovol Sv06 Plus, for Sv07 3D Printers PackageList:4 x ExtruderNozzlesforCRK1