High Compatibility: Designed for S1/Combo/ Pro 3D printers, this hotend kit withstands temperatures up to 320°C and supports rapid printing speeds up to 600 mm/s, ensuring quick, high-quality prints. Complete Package: Includes 2 sets of 0.4mm brass hotend kits, 2 extra silicone covers, and 2 additional 0.4mm brass nozzles. Pre-assembled for easy installation, enabling immediate 3D printing. Optimal Performance: Features fast thermal conductivity brass nozzles and an all-metal throat for smooth filament flow and consistent extrusion, ensuring layer thickness accuracy within ±0.02mm without clogging. Versatile Filament Compatibility: Suitable for 1.75mm PLA, ABS, PETG, TPU, and wood filaments. The kit handles up to 120°C bed temperature, ideal for high-temperature materials like ABS and ASA. Maintenance Tip: all parts are tightened before use to avoid loosening during transport. Recalibrate the hot bed post-installation for best results. Color: As shown Material: Metal + Silicone