The Woodpeckers 641 Precision Woodworking Square is a 6-inch metal square, with a red color, designed for precision in woodworking projects. It is part of the Standard (SAE) system of measurement, making it a reliable tool for measuring and layout tasks in the workshop or at home. The Woodpeckers brand is known for producing high-quality tools, and this square is a great addition to any home improvement or woodworking project.