The Bosch SDS-MAX 1-5/8- Inch Rotary Hammer delivers 20 percent more power. This combination hammer features a powerful 13.0 amp motor and has a dual-mode selector for combination versatility - rotary hammer or hammer-only mode. Providing 6.5 feet of impact energy, the tool weighs only 15.2 lbs, for a top performance-to-weight ratio. The hammer has integral clutch that helps to minimize torque reaction. Concrete contractors will appreciate the production in drilling and chiselling applications. The hammer's 12-position Vario-Lock helps to optimize chiselling angles. Bosch's Vibration Control in the hammer mechanism and grip area provide improved user comfort. And with constant response circuitry, users benefit from smooth starts and constant load under pressure. This is a renewed product backed by a 90-day warranty.