The Simon's 73760750 Mig Welder Nozzle File is the ideal tool for removing slag and dressing welding nozzles. The 4 in. long file has a half round profile shape, which makes it suitable for dressing welding nozzles. It has a black oxide finish that resists rust and corrosion. With 38 teeth per inch, this file is made with American pattern cut type. It has single cut edges and is 1/8 in thick. When you want to dress your welding nozzles, rely on the Simon's Mig Welder Nozzle File to get the job done right.