Supplied with 2 x 4.0 Ah batteries, charger & carry case. Brushless powerstate motor for up to 2 x longer motor life & up to 25% more power. Redlink plus intelligence system offers the most advanced overload protection. 4.3J impact energy at low 8.6m/s 2 vibrations. Patent pending for the dual AVS. 4 mode operation: rotary hammer, hammer only, rotation only & variolock. Fixtec system keyless chuck changing. 28mm max drilling into concrete.