Milwaukee Tool’s Hole Dozer bi-metal hole saw comes in 56 different diameters in a range of 9/16” to 6,” as well as in a variety of general purpose and specialty mix kits. It features Rip Guard and is equipped with a lifetime warranty against tooth breaks. Each tooth is built with more steel behind the cutting edge for added strength. It also features Plug Jack, an all-access slot design that allows access lower into the cup for thick material and higher toward the teeth for thin material.