The Arrow 1 1/4" Extended Plunge Blade is made from durable bi-metal and has long, thin blades specifically designed for cutting in hard-to-reach areas. The universal fit makes it compatible with popular oscillating tools such as Dremel, Milwaukee, DeWalt, and more. Some popular projects include cutting under the kickplate when installing new kitchen flooring, undercutting door jambs, and flush cutting tongue-and-groove joints.