McJ Tools 27mm HSS M2 Drill Bit Hole Saw for Metal, Steel, Iron, Alloy, Ideal for Electricians, Plumbers, DIYs, Metal ProfessionalsMaterial: High Speed Steel Style: Compact 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 27mm Dimensions: 3. 35 x 1. 46 x 1. 38 inches Weight: 0. 31 lb In