McJ Tools 2-1/4 Inch HSS M2 Drill Bit Hole Saw for Metal, Steel, Iron, Alloy, Ideal for Electricians, Plumbers, DIYs, Metal Professionals

Cut a wide range of materials such as steel, cast iron, sheet metal and copper | Work well with abrasive materials like high density resin and metal plates | Extremely High Accuracy <0.1mm | Comes in a rugged plastic box with extra pilot bit, set screw and allen wrench | By using liquid coolant, it can cut over 100 holes in steel plate (~<1/4" in thickness)