4.5A,110/120V-50/60HZ，1/2IN. Metal chuck with key.
Drilling capacity: 1/2 inch steel, 1/2 inch concrete, 1 inch wood.
Hammer drilling and drilling mode.
0-3000RPM variable speed reversible switch.
Chuck capacity: 1/16" to 1/2".
Double insulation safety protection system ETL safety certification.
Powerful ventilation and cooling system.
Turn left and turn right switch: easy to turn in and out the screw.
Accessories include: 360° comfortable, rotatable side handle, depth gauge.