We have Worker 9106 14.4V Li-Ion Rotary Hammer Drill with Product Detail 14.4V, 1350mAh Li-Ion battery capacity No load speed: 0-800 RPM Impact Frequency: 0-4800 BPM Drilling Capacity: 0.39 inch on wood, 0.31 inch on concrete, and 0.24 inch on steel Forward/Reverse function with LED indicator . The "Worker 9106 14.4V Li-Ion Rotary Hammer Drill" is best product for you. We recommended Worker 9106 14.4V Li-Ion Rotary Hammer Drill