Hakko soldering iron tips are shaped from a copper bar then coated with protective iron plating. The plating is thick for long-life yet exhibits excellent heat conductivity for more efficient thermal recovery. Various shapes are available. The most popular shapes are pyramid, conical, bevel and chisel. The Hakko T18-S3 is a large chisel shape tip, which can be used for large soldering applications. For best performance, always use authentic Hakko soldering iron tips with Hakko soldering equipment.