Milwaukee Hole Dozer Carbide Teeth Large Quick-Change Hole Saw Arbor is a high-quality arbor designed for use with hole dozer carbide teeth hole saws. The arbor also features a tool-free quick-change design that makes it easy to attach and remove hole saws. The arbor is made from hardened steel for durability and features a cobalt pilot bit that provides 10 times longer life than standard HSS pilot bits. The carbide teeth on the hole saw are designed to cut through a variety of materials, including wood, metal and concrete. A great choice for professionals and DIYers who need a high-quality arbor that can handle tough materials. It is easy to use and provides accurate cuts, making it a valuable tool for any workshop.