Milwaukee big Haw hole saw - the Milwaukee big Haw aggressive tooth geometry drills 10 times faster than hole saws. The innovative 3 tooth design allows you to drill up to 600 holes without sharpening. The deep gullets and reduced pilot bit shank deliver easy plug removal saving you time and money. The Milwaukee big Haw hardened steel teeth provide maximum durability against unintended nail impacts. For use with metal and wood. - diameter: 2-1/4 in. , Material: carbide-tipped, cutting depth: 2. 43 in. , pig Sty: 1, Package Type: Clamshell