Ideal for drilling in concrete and masonry from 4 to 28mm Items Included: Specifications Power 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 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? Uncertainty K 1 (Vibration): 1.5 m/s? Uncertainty K 1 (Vibration): 1.5 m/s? Hand / Arm Vibration ? Chiselling: 13.8 m/s? Uncertainty K 2 (Vibration): 1.5 m/s? Vibrations ? Drilling in metal: <2.5 m/s? Uncertainty K 3 (Vibration): 1.5 m/s?