The Bosch 18-Volt Lithium Ion line of cordless tools and combo kits use the industry's most advanced lithium-ion technology for greater battery life and more run time, all in a lighter package. This Bosch CLPK431-181 18-Volt Lithium-Ion Battery 4-Tool Combo Kit includes a hammer drill driver, an impact driver, a reciprocating saw, a flashlight, two 3.0 Ah batteries, a charger and a case. The hammer drill driver features a 7-1/2 in. head length, gear train and clutch that are lightweight and compact. The impact driver includes a hammer and anvil system that produces 1,500 in.-lb. of dynamic torque.