General description The 3-1/8' (80mm) Heavy Duty Industrial Grade Carbide Bi-Metal Hole Saw is designed for efficient cutting through various metals, including stainless steel, iron, aluminum, copper, and cast iron. This tungsten carbide hole saw offers a superior alternative to traditional bi-metal hole saws, providing faster, cleaner cuts and extended durability. Technical specifications Diameter: 3-1/8' (80mm) Material: Tungsten carbide Usage Ideal for cutting through stainless steel and other hard alloys. Features a spring-loaded pilot tip that ejects cut slugs for time-saving efficiency. Provides clean, burr-free holes faster than twist drills or conventional hole saws. Requires normal maintenance for prolonged tool life. Inexpensive sharpening allows for repeated use.