The DeWalt D25870K SDS-Max Dedicated Demolition Hammer is ideal for demolition and surface preparation in brick, masonry and concrete. It has the DeWalt Active Vibration Control system incorporating a counterbalance mass and floating handle delivers extremely low vibration.It boasts a variable chisel locking at 24 positions to provide the perfect approach for all applications, electronic variable impact energy/speed for total control, lock-on lock-off switch, barrel grip for better comfort in horizontal applications and brush wear and service indicators. SpecificationsPower Input: 1300 Watts Power Output: 840 Watts Load Speed: N/A rpm Blows per Minute: 1260-2520bpm Impact Energy: 2-14 JoulesTool Holder: SDS-Max Max. Drilling CapacityConcrete N/Amm Breakthrough bit: N/A mm Core bit: N/A mm Weight: 8.0 kg Length: 528 mm Height: 268 mm Width: 116 mm Hand/Arm Vibration: N/A m/s2 Uncertainty K 1 (Vibration): N/A m/s-¦ Hand/Arm Vibration - Chisel: 10.9m/s-¦ Uncertainty K 2 (Vibration): 1.5m/s-¦ Sound Pressure: 93dB(A) Uncertainty K 1 (Sound): 3 dB(A) Accoustic Pressure: 104dB(A) Uncertainty K 2 (Sound): 4dB(A) Standard Equipment: Multi-position side handle, 1 point chisel, Heavy duty carrying case