McJ Tools 2-7/8 Inch HSS M2 Drill Bit Hole Saw for Metal, Steel, Iron, Alloy, Ideal for Electricians, Plumbers, DIYs, Metal ProfessionalsMaterial: High Speed Steel Item Dimensions : 2. 83 x 2. 83 x 3. 54 inches 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 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) Item Number: McJM2HSS 2 7 8 Dimensions: 5. 0 x 3. 2 x 3. 0