The Blu-Mol X Bi-Metal Holesaw M3 is a 22mm cutting tool featuring high-speed steel alloy teeth bonded to a welded steel body for fast, clean holes in stainless steel, carbon steel, hardwood, and plastic. The bi-metal construction provides superior durability and heat resistance, extending tool life during extended cutting operations. Ideal for electricians, plumbers, and construction professionals requiring reliable hole-cutting performance across multiple materials.