The Blu-Mol X Bi-Metal Holesaw M3 is a 27 mm cutting tool featuring tough high-speed steel alloy teeth bonded to a welded steel body for safe, efficient cutting through stainless steel, carbon steel, hardwood, and plastic. Its bi-metal construction delivers superior durability and heat resistance, extending tool life on demanding jobs. Ideal for electricians, plumbers, and construction professionals requiring reliable hole cutting in metal and composite materials.