3-1/2" Diameter with 1" Depth of Cut Easy and efficient way to drill larger diameter holes without requiring large drill bits and extra large chucks Cut a wide range of materials such as stainless steel, cast iron, iron, sheet metal and copper. Works well with abrasive materials like high density resin and metal plates 1/2" Shank Comes with Pilot Drill, Hex Key and Auto-Ejecting Slug.