The Phaetus SiC Nextruder Prusa Nozzle is an all-metal, quick-swap nozzle designed for Prusa MK4/MK4S/XL/MK3.9/MK3.9S. Its integrated design eliminates leakage, allowing nozzle changes in seconds. The enlarged chamber delivers 21 mm³/s high flow, supporting high-speed printing without under-extrusion. Made of high-hardness silicon carbide (Mohs 9.8) with EndCoat coating (HV3300), it offers extreme wear resistance for abrasive filaments like PA-CF and carbon fiber, with inner diameter change as low as 0.0191mm. It lasts 7X longer than hardened steel nozzles. Compatible with PLA, PETG, ABS, TPU, and industrial composites including glass fiber, steel, wood, and more.