The Makita 8406 Percussion Diamond Drill has a heavy-duty construction that is ideal for site work and a torque limiter to prevent operator injury if the core bit snags. The percussion action is for drilling pilot hole and the rotary action is for dry diamond core drilling. Other features include a variable speed trigger, and double insulation to protect the user. The drill is excellent for plumbers, electricians and general contractors. Supplied with 1 x Chuck Key, 1 x Side Handle, 1 x Carry Case Specification Input Power 850W No Load Speed 0-1,500/min. Blows Per Minute 0-22,500/bpm Capacity Masonry 20mm, Steel 13mm, Wood 30mm Max. Dry Diamond Core 152mm Weight 3.7kg Vibration drilling 2.5 m/sec. Vibration hammer drilling 9.5 m/sec. Vibration K factor 1.5 m/sec. Noise sound power 105 dB(A). Noise sound pressure 94 dB(A). Noise K factor 3 dB(A).