The Makita HP1640 Percussion Drill is fitted with a 13mm Keyed Chuck. It has a variable speed trigger and forward/reverse rotation for increased control. The tool is double insulated for increased user safety. It is supplied with a side handle and a depth stop. Specifications: Input Power: 680W.No Load Speed: 0-2,800/min.Impact Rate: 0-44,800/bpm.Capacity: Masonry 16mm, Steel 13mm, Wood 30mm.Weight: 2.0kg. Vibration Hammer Drilling: 19 m/sec.Vibration K Factor: 2 m/sec.Noise Sound Power: 103 dB(A).Noise Sound Pressure: 92 dB(A).Noise K Factor: 3 dB(A).