The Makita 40V Max XGT Brushless 1-9/16 in. AVT Rotary Hammer (GRH05Z， tool only) is a cordless concrete solution designed for heavy-load applications. It delivers the power， speed， and run-time for corded demands， without the cord. The GRH05Z features Active Feedback-Sensing Technology (AFT)， which electronically turns off the motor if rotation of bit is suddenly forced to stop， and Anti-Vibration Technology (AVT) for reduced vibration. More than just a padded handle， AVT is an internal counterbalance that uses air pressure to move counterweight pistons in the opposite direction of the drive piston to actively reduce vibration. In addition， the vibration-absorbing back handle and side handle further reduce vibration. For added durability in harsh job site conditions， Extreme Protection Technology (XPT) is engineered for improved dust and water resistance. Auto-Start Wireless System (AWS) uses Bluetooth technology for wireless power-on and power-off communication between the equipped tool and dust extractor. Once connected via AWS， the AWS-equipped dust extractor will automatically power on or off when the AWS-equipped cordless tool starts or stops， running only when the tool is in use. This increases productivity on a single charge and reduces continuous noise at the job or work site.

OUTPOWER: Makita-built brushless motor along with 40V Max XGT battery combine to deliver the power performance required for heavy-load application

OUTSMART: Auto-start Wireless System (AWS) utilizes Bluetooth technology for wireless power-on/off communication between tool and dust extractor (AWS Transmitter sold separately)

OUTLAST: Extreme Protection Technology (XPT) is engineered for improved dust and water resistance for operation in harsh conditions

Anti-Vibration Technology (AVT) is an internal counterbalance system along with vibration-absorbing handles that work together to reduce vibration

Active Feedback-Sensing Technology (AFT) electronically turns off the motor if rotation of bit is suddenly forced to stop

Electric brake allows the tool to be repositioned faster for maximum productivity

Dust extraction capability with optional Makita Dust Attachment Kit

Constant speed control automatically applies additional power under load for optimum performance

Soft start suppresses start-up reaction for more precision and better accuracy

Soft no-load function automatically reduces the speed of the motor when idling to help increase tool life and performance

Built-in L.E.D. light with an independent on/off switch illuminates the work area

Variable speed dial enables the operator to match the speed to the application

Large Multi-finger power trigger for increased comfort during extended use

2-mode operation for Hammering with Rotation or Hammering Only for increased versatility

Multiple bit angle settings allows the steel/bit to be set at different positions for operating convenience

Torque limiting clutch engineered to prevent gear damage by automatically disengaging gears during a bind-up situation

The digital communication within XGT optimizes performance to provide up to 2X longer sustained power under heavy-load applications

The digital communication within XGT actively monitors and protects against overload， over-discharge and overheating