20-Piece HOLE DOZER and SAWZALL Blade PACKOUT Kit includes 12 blades, 5 hole saws, 2 pilot bits, 1 arbor, and 1 hex key that you can store and organize in the included PACKOUT Box. The Milwaukee HOLE DOZER Hole Saw features Rip Guard, the strongest tooth form in the industry, backed by the Rip Guard Limited Lifetime Tooth Break Warranty. The hole saws include an All-Access Slot design that gives you full access during plug removal to increase productivity and eliminate wasted downtime between holes. For fast, tool-free change-outs, use Milwaukee's universal Quick-Change Arbors 49-56-7240, 49-56-7250, and 49-56-9100. The included Wood Cutting SAWZALL Blades have been engineered with Milwaukee NAIL GUARD to deliver you the fastest cuts, longest life, and greatest tooth durability on the market. Their FANG TIP bites into wood on first contact providing you with the quickest plunge cuts for maximum efficiency. The Metal Cutting SAWZALL Blades feature TOUGH NECK that protects against tang breakage and delivers you the strongest SAWZALL blade tang on the market. Their GRID IRON stamped honeycomb pattern throughout the body of the blade greatly increases the rigidity of the blade. These blades are ideal for making tough, straight cuts.