The 12V CXT Lithium-Ion Brushless 5/8” Rotary Hammer Kit (RH01R1) 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. For longer run time, 12V max CXT cordless tools are also compatible with 12V max CXT Lithium-Ion 4.0Ah batteries (BL1041B, sold separately). 12V 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 12V max CXT series, combining performance with superior ergonomics in a compact size.