The Makita HM1511 corded electric breakers were developed from the HM1317C series. The power has been increased and vibration has been reduced, but with minimum increase in tool size and weight. Features & Benefits Anti-vibration housing and AVT for reduced operator fatigueSoft start"Soft no load" function automatically reduces motor speed during idling to suppress vibrationDouble InsulationHigh powerService indicator lamp indicates when to replace carbon brushesOn/off slide switchPower-ON indicator lamp SpecificationsVoltage: 110vInput Wattage: 1,550 wImpact energy: 48.9 JBlows per minute: 1300 bpmDrive shank: 30mm HexVibration: Chiselling 6.5 m/sec²Vibration K factor: 1.5 m/sec²Noise sound pressure: 85 dB(A)Noise sound power: 105 dB(A)Noise K factor: 1.57 dB(A)Net weight: 19.2 kg ContentsHM1511/1 Corded Electric Breaker 110vSide handleBull point chiselCarry case