The Makita 153664-0 Circular Saw Blade Case is a replacement component designed for the compatible Makita 5740NB circular saw. It helps protect and organize the saw blade during storage and transport. Replacing a damaged or worn case can help keep your equipment and accessories properly protected. https://www.wholetoolbox.com/makita-153664-0-circular-saw-blade-case-5740nb/153664-0.html