The 12-Volt CXT Lithium-Ion Brushless 5/8 in. Rotary Hammer (RH01Z, tool only, batteries and charger sold separately) is a compact concrete drilling solution powered by an efficient Makita BL Brushless Motor for up to 50% longer run time, increased power and speed, and longer tool life. The RH01Z delivers 0-680 RPM, 4,800 BPM, and 1.1 Joules of impact energy. Ease-of-use and efficiency features include 2-mode operation (rotation only, hammering with rotation), a variable speed trigger, and a vibration-absorbing handle that moves independently of the motor and hammer mechanism for increased operator comfort. 12-Volt max CXT cordless tools are compatible with 12-Volt max CXT lithium-ion 2.0Ah and 4.0Ah batteries (BL1021B and BL1041B, sold separately). 12-Volt max CXT lithium-ion batteries are engineered with a battery protection circuit that protects against overloading, over-discharging and over-heating. It’s part of the expanding 12-Volt max CXT series, combining performance with superior ergonomics in a compact size.