This product uses soldering iron tips adapted to TS100/101,Pine64,Pinecil-BB2/V1/V2 and others and is interchangeable with standard 936 universal soldering iron tips, and is used for M2 ,M2.5 M3, , M5, M6 (1/4"), M8 Hot-melt nuts for hot-melt copper nuts printed on 3D printers or to embed nuts on plastics. Heat Insert Nut Soldering Tip Adapter for TS100/101 Pine64 Pinecil Series M2-M6 Indenter Insertion Soldering Iron Tip Adapter Adaptors: made of brass, with female thread. Heat core: 75W heat core with male thread., Manufacturer: Akfldms