IVY Classic 28102 2H 7/16-Inch Hex Shank Hole Saw Arbor, Fits 1-1/4 through 6-Inch Hole Saws, 2 Locking Pins, 1/Card Arbor with 2 locking pins, 5/8-inch-18 thread, adapts 1-1/4 through 6-Inch hole saws for use with power drills Cuts stainless and mild steel, nailed wood and plastic Set screw in alloy-steel body for replacement of Pilot Drill. Includes 1/4-inch x 3-1/16-Inch HSS 118-degree split point pilot drill Use with IVY Classic Pilot Bits: 28110, 28111, or 28132, Premium Swift bore (Registered Trademark)