The DEWALT DCH773Y2 is the industry’s most powerful cordless 2 in. SDS MAX combination rotary hammer. The FLEXVOLT® 2 in. Cordless SDS MAX Combination Hammer, with its durable and hard hitting German engineered mechanism, delivers category leading 19.4 Joules of impact energy. This combination hammer features the FLEXVOLT® 20V/60V MAX* 12.0 Ah battery pack for cordless freedom. Constant speed electronics allows the tool to maintain speed under load, even in the hardest concrete, while the patented E-CLUTCH ® system protects the user in bind-up situations by stopping the rotation of the bit in a bind-up situation. This tool is ideally suited for horizontal and downward drilling for #6 - #14 rebar dowel applications, core drilling up to 6 in. and chipping in any lower wall and floor applications. Active Vibration Control® technology also reduces vibration felt by the user for less fatigue and greater productivity. This tool comes Tag Ready, so users and companies can attach the DEWALT Tag and track its location virtually anywhere via the DEWALT Tool Connect app. **Impact power = Impact energy x impact frequency.