HzdaDeve Heating Assembly Kit and 2PK 0.4MM Integrated Hardened Steel Nozzles for Kobra X Combo High Speed Nozzle Ceramic Zirconia Heat Insulation Block Heating Component Heat-Insulating Base Clip Specification: Material: Metal + Plastic Hotend Base: Ceramic Zirconia Heat Insulation, with a heat resistance of up to 2200°C Compatible 3D Printer: for Anycubic Kobra X Combo Package Include: 1 Set Heating Assembly Kit (thermistor, heating cartridge, heat-insulating base, hot end metal clip) 2 X 0.4MM Integrated hardened nozzle 3 Pack Screws After-Sale Service: If there are any questions, just contact us freely, and a satisfactory solution will be provided within 24 hours