DEWALT | Corded 3 Mode SDS-Plus Rotary Hammer With Quick Change Chuck 28mm | D25144K-B5Power Input 900 Watts No Load Speed 0 1450 U Min Single Blow Energy (Epta 05 2009) 3. 0 Joule Blows Per Minute 0 5350 Bpm Bit Retainer Sds Plus Max. Drilling Capacity (Wood) 30 Mm Max. Drilling Capacity (Metal) 13 Mm Max. Drilling Capacity (Concrete) 28 Mm Max. Drilling Capacity (Core Bit) 65 Mm Weight 3. 1 Kg Length 360 Mm Height 210 Mm Vibrations " Drilling In Concrete Hammer 14. 9 M S 2 Uncertainty K 1 (Vibration) 1. 5 M S 2 Hand Arm Vibration "