UltiMaker Print Core AA 0.40mm This print core is compatible with the Ultimaker series. It is a basic core that supports most materials. It has been used for a short time, and the heat block is clean. The modeling ability is current; please check the photos as I have test printed with this item. The new price is 25,080 yen (excluding tax). Quoted from the distributor's page below: Can be used for build materials and Breakaway support materials. The print core includes the entire hot end, and the built-in chip for communication and synchronization with the printer records the type of print core and runtime statistics. The print core is designed for easy attachment and removal, which improves the printer's uptime. https://www.brule.co.jp/ultimaker/ultimaker-parts-accessories/ultimaker-printcore-aa-4.html