Hougen 11104 RotaCut 5/16-Inch Cutter with 3/8-24 Threaded Hole 5/16-Inch cutter diameter Maximum depth of cut 1/4-inch Holemaking is faster and easier than with conventional twist drills and hole saws RotaCut cutters are precision-ground Produce clean, burr-free, round holes without deforming surrounding material