Features: brand new and high quality Specifically designed for changing print nozzles. The upper part can fix the heating block, and the lower part can replace the nozzle. Consists of two separate parts. Easy to remove and install. Well built and comes with 5 sleeves. Free to "transform". Made of specially hardened steel. Has toughness and good performance. Change nozzles easier and faster. 6mm 7mm 8mm 9mm 4 hidden holes can be stored, compact and convenient. Specifications: Material: Hardened Steel Used for : V6 Volcano MK8/MK9/Cr10 Crazy Mosquito Heat Block Package Includes: 1Set x Heat Block note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!