Two 3.0 Ah HXP Lithium Ion batteries for three??times the life at half the weight of NiCd or NiMH batteries Lithium Ion batteries can be used in Hitachi 18-volt DMR and DVF3 tools for even more value Class leading torque- 1,330 in./lbs. to power through the toughest jobs with ease; 1/4-inch hex drive Hitachi's unique Cool Flow system allows the impact to run harder and longer, minimizing the risk of burnout Compact and lightweight at only 6-3/8 inches long??and 3.5 lbs, Manufacturer: Hitachi