The Dewalt DCK2033 Kit features the DCD996 premium hammer drill and a DCH333 54v SDS Drill. This could be the most powerful twin kit ever made! The two tools are perfect for a huge variety of applications DEWALT XR FlexVolt batteries stand at the forefront of cordless technology. They are the world’s first convertible 18/54 Volt batteries, offering unprecedented levels of power. Provides the unique ability to power heavy-duty construction power tools whilst still being compatible with existing DEWALT XR 18 Volt products and offering increased runtime. The DeWalt DCD996 combi hammer is the successor to the DCD995, with an improved, larger brushless motor which delivers up to 34% more power. DeWalt have improved the airflow to this motor which keeps it cool and at the top of its performance. It features an improved automatic high speed for increasing the users masonry drilling speed. It has a 3-speed gear box giving you ultimate control over blows-per-minute and revolutions-per-minute.