- YCCOKJJ BI01 hotend designed for Kobra 3, Combo, and ACE Pro 3D printers - Complete kit with 3 hardened steel nozzles and 3 brass nozzles, all 0.4 mm, to suit different materials and printing needs - 2 heat-resistant silicone sleeves that improve thermal stability and prevent filament from sticking - Constructed from aluminum alloy, brass, and hardened steel for greater durability and performance - Easy installation thanks to pre-assembled components: simply remove the previous hotend and connect the new one - Compatible with 1.75 mm filaments such as PLA, ABS, PETG, TPU, and wood - Working temperature range from -40°C to 300°C, suitable for demanding prints - Includes 24V 50W heating cartridge and NTC 100K thermistor for precise temperature control - Ideal for users seeking precision, speed, and easy maintenance in their 3D printers