The Brownells metal checkering files are precision-engineered tools specifically designed for gunsmiths and metalworkers. These tools are essential for those who aim to create precise, non-slip gripping surfaces on various firearm components. With their high-quality construction, these files ensure that each checkering task is performed with accuracy and reliability. These files are designed to ensure precise and accurate line spacing, thereby enhancing the creation of improved gripping surfaces wherever required The process parallels wood checkering - delineate master lines, then incrementally advance the file by a few teeth, utilizing preceding lines as a precise guide to establish the desired pattern After the pattern is meticulously delineated, achieve the desired final depth using a precision-engineered 60 degree needle file Finer cuts provide a matte effect to minimize glare and light distortion