DeWalt D21570K 1300w 127mm Diamond Core Hammer Drill The DeWalt D21570K diamond core hammer drill has a new top of the range motor which provides improved performance in applications with dry core bits up to 127mm in bricks or soft masonry. FEATURES New motor gives improved performance in applications with dry core bits up to 127mmn in bricks or soft masonry Electronics provide e-clutch, power-up and overload protection Two speed gearbox for increased versatility when drilling in wood, metal and concrete with standard drill bits Electro-Mechanical clutch increases user control and protection Heavy duty 16mm steel chuck allows quick bit change whilst offering excellent bit retention Innovative mode selection collar allows intuitive control for optimal performance SPECIFICATION Spindle Thread: 1/2\" X 20 U.N.F Power Input: 1300 Watts Power Output: 680 Watt No Load Speed: 0-1250 / 0-3500 rpm Max. Drilling Capacity in Concrete: 22 mm Max. Drilling Capacity in Masonry: 127 mm Collar Diameter: 43 mm Chuck Capacity: 16 mm Gears: 2 (Variable Speed) Weight: 3 kg Length: 380 mm Height: 215 mm NOISE & VIBRATION Sound Pressure: 93 dB(A) Sound Pressure Uncertainty: 3 dB(A) Sound Power: 104 dB(A) Sound Power Uncertainty: 3 dB(A) Hand/Arm Vibration - Diamond Drill: 13 m/s² Uncertainty K 1 (Vibration): 6.8 m/s² Hand/Arm Vibration - Drilling: 16 m/s² Uncertainty K 2 (Vibration): 4.6 m/s²