Makita XRH04Z 18V LXT Lithium-Ion Cordless 7/8" Rotary Hammer, Tool Only Compact Pistol Grip Design Makita-built variable speed motor delivers 0-1,200 RPM and 0-4,000 BPM 3-mode operation for "Rotation Only", "Hammering with Rotation" or "Hammering Only" for multiple applications Built-in clutch reduces gear damage by automatically disengaging gears if bit binds. One-touch sliding chuck for quick bit changes Faster drilling with synchronized RPM and BPM