DEWALT DCH273B  20v Max Brushless SDS Rotary Hammer  (Tool Only) Brushless motor for extended runtime and durability Active Vibration Control which significantly reduces vibration 2.1 Joules impact energy which provides corded power without the cord Retractable utility hook for convenient hanging and storage No Load Speed 0 - 1,100 rpm. Optimal Concrete Drilling-5/32 - 1/2 inch. Chuck Type-SDS+. Blows/Min- 0 - 4,600 bpm Battery & Charger Sold Separately