Blackdecker 1/2" Variable Speed Reversible Drill with Hammer Action 1/2" Variable Speed Reversible Drill with Hammer Action High-power 5.5 amp motor. Hammer drill/rotary drill for heavy-duty wood, steel, or masonry applications. Variable speed/reversing for starting holes and screwdriving into various materials. Slide handle rotates 360 for improved control; allows for right- or left-handed use. Lock-on button for continuous power. Metal gear housing for increased durability. 0-900 RPM; 0-10,800 BPM. Capacity: 1/2" steel, 1-1/4" wood, 1/2" masonry.