The Craftsman 8.0 Amp 1/2" Hammer Drill (Model OB8AID) is built for tough jobs. This Craftsman 8 Amp Hammer Drill is the perfect tool whether you're working on a tough renovation project or drilling holes for a carpentry job and everything in between. When working with powerful impact tools, precision is key. The integrated depth gauge on this model helps you hammer to the right depth without going too far. The variable speed trigger allows you to move from 0 to 3,000 RPM to help you control the hammer based on the situation or material you're working on. Get any difficult job done with the 1/2" Corded Hammer Drill.