The Milwaukee 49-22-5607 Hole Dozer General Purpose Bi-Metal Hole Saw Packout Organizer Kit (10-Piece) features Rip Guard™, the strongest tooth form in the industry, backed by the Rip Guard™ Limited Lifetime Tooth Break Warranty. Each tooth is built with more steel behind the cutting edge for added strength. The Rip Guard™ warranty on tooth breaks is a first for the hole saw industry. The added tooth strength along with 8% cobalt give added life to the teeth, allowing for increased productivity on the jobsite, as well as continued hole quality. The Hole Dozer™ includes Plug Jack™, an all access slot design that allows for full access during plug removal. The Plug Jack™ gives access lower into the cup for thick material and higher towards the teeth for thin material. With multiple positions to apply leverage and better plug access, Plug Jack™ increases productivity and eliminates 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 10-Piece HOLE DOZER™ Bi-Metal Hole Saw Kit PACKOUT™ Compact Organizer features a new 3.5 TPI tooth design that offers you the longest life in metal applications. These MILWAUKEE® HOLE DOZER™ Bi-Metal Hole Saws feature the industry's only Lifetime Tooth Break Warranty and can take on all general purpose applications, making them the most durable hole saws. The ALL-ACCESS SLOTS solve the frustration of plug removal, making you more productive with less downtime between holes. The new slot design also gives you increased pilot visibility for accurate placement and faster chip ejection keeping yThe cut cool. HOLE DOZER™ Thermoset Coating allows for faster cutting and is optimized for cordless tools, delivering you 25% more holes per charge. The HOLE DOZER™ Bi-Metal hole saws are proudly made in the USA.