DEWALT Hole Saw, Bi-Metal, 4-Inch (D180064);

Made of M3 steel for exceptional durability, and featuring a generously sized bi-metal section, the D180064 from DEWALT makes accurate cuts quickly and efficiently. Ideal for a variety of projects, this four-inch (102 millimeter) standard saw boasts an innovative tooth design and set pattern for better reliability when cutting through metal, and strong, sturdy backing plates that won't lose their shape. Its most helpful feature, however, is its deep-cut style, which easily handles various materials and densities. And because DEWALT saws outperform and outlast other brands by 35 to 200 percent, you can count on the D180064 for years to come.