The Lenox T3 Bi Metal Speed Slot Hole Saw features a patented vari-tooth design which optimises cutting for fast cuts and long tool life. The increased wall thickness improves durability and minimises tooth loss, optimised tooth design penetrates metal with ease. Features & Benefits • 50% longer life. 2X more durable • 10% thicker wall adds strength and durability • Improved metal cutting performance • Increased wall thickness improves durability and minimizes tooth loss • Optimized tooth design penetrates metal with ease • Fast, efficient cutting in wood • Larger, sharper teeth remove more wood for fast cutting • Easy plug removal • Speed Slot staircase design for fast, easy plug ejection Specifications • Diameter: 41mm