【2.1 Joules Impact Energy】Cordless hammer drill has 2.1 Joules of impact energy for fast drilling, easily drill through concrete, brick and masonry. 【Brushless & Powerful Motor】Powerful durable brushless motor with variable speed trigger that delivers 0-1400 RPM, 4,500 BPM in different modes. 【4 Application Modes】Mode in 1 knob to manually switch between hammer, drilling, chisel and rotary hammer for drilling on concrete, cement, brick, wood and rock. 【High-Efficient Work】SDS-Plus chuck for quick bit change. 360° auxiliary anti-vibration handle. Variable Trigger with forward & reverse switch optimizes the drilling accuracy. 【Ergonomic Design】Cushioned overmold grip for comfort & control Well. Vibration reduction mechanism reduces vibration felt by the user at the handles. 【Improved Visibility】Built-in LED Work light illuminate workspace without an additional light source. 【Optimal Configuration】Fade-free power battery pack with integrated 4-Bar fuel gauge displays the power level of battery charge and usage. 【Compatible 20V Platform】Powered by the DongCheng 20V Max Lithium-Ion battery platform, easily share batteries across the entire DongCheng 20V Max family of power tools. 【Package Included】(1)20V Max Rotary Hammer, (4)SDS-Plus Drilling/Drill Bits, (2)4.0Ah Li-ion Battery, (1)2A Charger, (1) Heavy-Duty Plastic Box, (1)User manual. DongCheng 20V Max Cordless Rotary Hammer Drill, 7/8" SDS-Plus, 4 Application Modes, Brushless, 2.1 Joules, Cordless Demolition Hammer for Concrete, Including 2*4.0Ah Battery, 4 Drill Bits