This Dewalt DCK276P2T G2 Brushless Twin Pack, contains the following: 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. For example, in gear three while in hammer mode you ll have 38,250 blows per minute while the chuck spins at 2,250rpm. There's also a newly improved, 3-stage, bae-mounted LED worklight. It has a maximum brightness of 60 lumens, enough to light up a huge work area and even bright .