Cordless rotary hammers, cordless swivel hammer, bare tool, voltage 20.0, type Chuck SDS Plus, cordless tool type Li-Ion battery, battery capacity 4.0Ah, 0 to 5500 strokes per minute, 0 to 1500 without load RPM, brushless motor YES, 20V MAX series, stop rotation Yes, brushless motor yes, 20V MAX series, stop turn yes, 1 in. Concrete capacity, 1/2 in. Solid drill bit capacity, 2-1/2 inch. Core drill capacity, impact energy 2.6 ft. -lb., battery included, replacement battery 21RV47, 31AC52, D-Handle type handle