Voltage: 120V ACAmperage: 12.0ANo Load RPM: 170 - 340No Load BPM: 1,500 - 2,900Chuck Style: SDS-MAXMax Capacity In Concrete: 1-9/16"6.1 ft. lbs. Of Impact Energy, Up To 20% More Than Other Combo Rotary HammersTool Free Bit Changes With Automatic Bit Locking And Maximum Impact-Energy Transfer RateDual Mode Selector Knob Allows The Tool To Be Switched Between Rotary Hammer Mode Or Hammer Only ModeVario-Lock Positioning Optimizes Work Angles For The Best Chiseling Location360 Degrees Auxiliary Handle Offers Operator Comfort Due To A Wide Range Of PositioningIntegral Slip Clutch Offers More User Security Because It Disengages The Output Shaft Should The Bit Get Into A Bind SituationInnovative Service Modules Designed To Quickly Replace Brushes And CordVariable-Speed Reversing Trigger For Accurate Bit Starting As Well As Removing Fasteners Or Bound BitsWorks With Bosch Pro+Guard Dust Solutions, An End-To-End Dust-Collection System Than Helps Users Move Towards OOSHA Silica Table 1 Dust ComplianceIncludes Tool, Auxiliary Handle And Carrying Case