High efficiency and unrivaled low level of vibration. (Anti-Vibration Technology). TOOL ONLY!USER BENEFITS:The level of vibration is further reduced by completely separating the machine holding section from the motor/transition section.Soft no load function automatically reduces the motor speed during idling to suppress the vibration of the machine body.New ?Two on/off switches switchable in hammering mode?.Easy-to-operate operation mode change lever.-Double Insulation, Anti-Vibration Technology, Variable Speed, SDS Max, Torque Limiter, Constant Speed, Soft Start and Carry Case. Tool sold without bit.