The Arc-Fit Angular tool produces a consistent accurate notch in pipe. Because this tool stamps out the notch, each tool is dedicated to a specific tube or pipe size at a specific angle. Arc Fit Angular units are designed to produce angular notches on pipe and heavy wall tubing. The notch is ideally suited to welding with a rod or heavy wire. The resulting "V" at all contact points allows for full weld penetration without having weld buildup which must be ground down later.