The T18-D12 is a chisel-tip soldering iron tip designed for use with Hakko soldering stations and systems including the FX-600, FX-8801, 907, 900M, and 913 models. This tip features a chisel-shaped geometry with a 1.2mm width, providing a flat working surface ideal for soldering applications requiring broad contact area and heat distribution. The T18-D12 replaces the earlier part number 900M-T-1.2D and is compatible with the T18 series tip lineup. This tip is commonly used in electronics assembly and repair work where controlled heat application and solder flow management are essential.