Drill holes upto 3X faster than twist drill bits with the Milwaukee® 4-1/8 in threaded Steel Hawg® cutter. This long-lasting cutter features carbide teeth and an alternating cutting pattern to cut upto a 2 in 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. Use it with arbor 49-57-0030 on Milwaukee® 4262-1 magnetic drill press or arbor 49-57-0010 on Milwaukee® 4292-1 magnetic press. The 4-1/8 in Dia bit has a metric thread size of M18™ x 1-1/2 shank. Use the threaded Steel Hawg® with a #3 morse taper arbor assembly 49-57-0010.