This Makita HR4013C SDS MAX Rotary Hammer has been developed to provide extremely high operating efficiency. It gives the user more comfort and offers an unrivalled level of low vibration. The one-touch sliding chuck means easy installation and removal of bits and there is an easy operation-mode change lever located on the top of the motor housing for reduced chance of breakage. The soft no load function reduces the speed of the motor during idling to suppress the vibration of the machine body during use and the unrivalled low level of vibration is aided by the vibration absorbing housing. You are alerted by an LED service light when the carbon brush needs to be replaced and the on/off switch is switchable between two switches to meet your application: For Continuous or Intermittent chiselling applications. Impact energy - 8.0J Max in concrete - 40mm Impacts per minute - 1450 - 2900 Input Wattage  - 1000W Vibration K factor1.5 m/sec² No Load Speed   250 - 500 rpm Vibration: Chiselling4.5 m/sec² Vibration: Hammer Drilling5 m/sec² Net weight with pipes   6.8 kg