The Milwaukee 1-5/8 -inch Electromagnetic Drill delivers the faster set-up. cutting and drilling. It is 13 Amp motor delivers the fastest drilling with annular cutters or twist drill bits. Equipped with a 2-speed gear box the tool can be adjusted tool-free between annular cutters at 475 RPM and twist drill bits at 730 RPM.Powerful 13 amp motor.Capacity to cut up to 1-5/8 in. diameter holes.2 Speed gearbox 475/730 RPM.Tool can be adjusted tool-free between annular cutters at 475RPM and twist drill bits at 730 RPM.Tool free motor head adjustment.