1/2 in. 7.5A Variable Speed Hammer DrillThis rugged hammer drill has a drill speed up to 0 2800 RPM for work in a wide variety of materials. Features include a 7. 5 amp motor that gives you the power to drill through concrete, wood and steel. The comfort grip handle reduces fatigue. Drilling capacity: 1 2 in. in steel, 1 2 in. in concrete, 1 in. in wood Hammer drill and drill only modes Variable speed reversible switch Chuck capacity: 1 16 in. to 1 2 in. Comfort grip handle