When you use a circular saw to cut boards to length, you no doubt have a tough time accurately aligning the saw blade to your pencil mark, which means each board isn't always the exact same length. Thanks to the Square Cut, it's easy to achieve perfect square cuts and consistent lengths every time! Adjustable guide arm locks in place for accurate registration to the cut line every time. Works with material up to 12" wide. Features a roof pitch layout feature, non-slip rubber feet, and impact resistant plastic construction.