[High Performance]The hardened steel nozzle boasts superior thermal conductivity and strength, ensuring longer service life, durability, and compatibility with 1.75mm filaments such as PLA/ABS/PETG/TPU/Wood. [Easy Installation and Removal]This hot end kit to help you quickly and accurately secure the hot end to the mounting location, making the installation and removal of your hot end very easy. (Before replacement, please that the hot end has cooled down to prevent scalding.) [Package Contents]1 set hotend kit+0.2mm hardened steel nozzle+0.4mm hardened steel nozzle+0.6mm hardened steel nozzle+0.8mm hardened steel nozzle+1pc closed end wrench +1 pc open end wrench. [Compatible Printer]This hot end kit is only compatible with for A1/A1 Mini, please confirm your 3D printer model before ordering. Colour:As Shown Material:Metal Due to different product batches, the appearance , which does not affect the use Package Contents: 1 set * hotend kit(with 4 pcs additional hardened steel nozzle)