The 4253-1 electromagnetic drill motor features 6.2 amps and a 1/2 in. chuck turning at 600 rpm. This motor is best used on the 4202 fixed position base. Light weight and ample power make this a good choice for smaller holes into steel. 1/2 Mag Motor 6.2A,1/2 inch capacity 6.2 amp motor 600 RPM ,1/2 inch keyed chuck ,Taps up to 5/8 inch -18 threaded hole. 5/8-11 and 1/2-13 taps not recommended ,Develops up to 1650 pounds of drill point pressure with a 1 inch steel plate , ,Voltage 120 AC Only ,Drill Capacity 1/2 in. ,Amps 6.2 ,No Load Speed 600 RPM ,Tap Capacity 5/8 in.-18 ,Drill Point Pressure 1610/1650 lbs. ,Chuck or Taper Chuck ,Tool Weight 8.0 lbs