The slim head design of Hitachi's new DN12DYK right angle drill allow it to fit in the narrowest places. At only 3.5 inches, it is the slimmest inits class. A heavy-duty 3/8 -Inch key-less chuck makes bit changes a breeze. The variable speed trigger controls the RPM range from 0-800. Hitachi's electronic speed control provides maximum torque at all RPMs. This kit comes complete with 2 batteries, charger and case.