Milwaukee 49-56-0191 Heavy Duty 4/6 Super Tough 3-1/2 Inch Diameter Bi-Metal Hole Saw

Bi-metal hole saws are high production tools designed for cutting all machinable materials, including steel, aluminium, copper, brass, sheet metal, stainless steel, wood or plastics. Heavy-duty 3/16 inch thick steel back. 1-1/2 inch cutting depth. Faster, more aggressive cutting plus heat resistant cobalt. Less vibration for smoother cuts. Shatter resistant. High alloy steel body construction for longer life. High speed steel teeth electron beam welded to a steel body.