The BOSCH Freak is half wrench, half driver, all impact. The GDX18V-1800CB15 combines a versatile two-in-one impact driver with next-gen li-ion 21700 Cell technology. The GDX18V-1800C two-in-one 1/4 in. And 1/2 in. bit/socket impact driver delivers results, with the two-in-one bit/socket drive that offers a 1/4 in. quick-change hex shank holder with power Groove for bits, and a 1/2 in. square drive for sockets. The kit features a CORE18V battery, which has next-gen li-ion 21700 Cell technology for optimal performance in a lightweight, high-power battery. The impact drivers efficient, powerful EC Brushless cordless motor produces up to 1, 800 in. -Ibs. of torque, while the BOSCH hammer-and-anvil system provide maximum impact energy and up to 0-4, 200 impacts per minute. The variable-speed trigger provides accurate driving speed. The driver has an LED light system to illuminate the work area.