Milwaukee Hole Dozer hole saw features Rip Guard, the strongest tooth form in the industry. Each tooth is built with more steel behind the cutting edge for added strength. Hole Dozer Bi-metal hole saw with arbor has a new 3.5 TPI tooth design that offers you the longest life in metal applications. 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 your cut cool. Hole Dozer thermoset coating allows for faster cutting and is optimized for cordless tools, delivering you 25 percent more holes per charge.Find the HOLE SAW W/ARBOR 4-1/2 at Ace.