The 18-Volt LXT Brushless Cordless 1 in. Rotary Hammer with HEPA Dust Extractor (XRH011TWX) is a cordless concrete drilling solution powered by an efficient Makita-built brushless motor for up to 50% longer run time, increased power and speed and longer tool life. The XRH011TWX delivers 0 RPM - 950 RPM, 4,700 BPM and 1.7 ft. lbs of impact energy. The HEPA Dust Extractor Attachment is trigger-activated for user convenience. The rubber suction gasket is engineered to provide consistent contact with the work surface, where the dust is channeled to the clear dust container with HEPA filter, which captures 99.97% of dust particles (size 0.3 mic). An added feature is a 2-second delay on the vacuum motor: After the trigger is released, the 2-second extended suction collects remnant dust and particles as the bit is being pulled out of the work surface, making the XRH011TWX ideal for overhead drilling. The high capacity dust container is clear and provides an accurate level indicator of collected material. The container also has the largest material holding capacity in its class with faster and more convenient disposal of material than leading competitor models for less downtime. It has a quick release and can be easily detached from the rotary hammer when not needed. Multiple chisel positions align the rotary hammer more comfortable with the application. A torque-limiting clutch prevents gear damage by disengaging gears if the bit binds.