The Milwaukee® 1-1/4" Threaded Steel Hawg® Cutter is long-lasting and features carbide teeth and an alternating cutting pattern to cut up to a 2" hole depth in steel, stainless steel, cast iron or aluminum. The spring-loaded, self-ejecting pin lets you make smoother, more accurate cuts and eject the plug faster. The Steel Hawg Cutter works with most electromagnetic drill presses. The 1-1/4" bit diameter has a metric thread size of M18 x 1.5" shank. Use the Threaded Steel Hawg with a No. 3 Morse Taper Arbor Assembly 49-57-0010.