The Bosch freak is half driver, half wrench, all impact. The GDX18V-1800 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 impact driver’s efficient, powerful EC brushless motor produces up to 1,800 in.-lb. of torque and up to 0-4,200 impacts per minute. the variable-speed trigger provides accurate driving speed. The two-in-one bit/socket drive increases both convenience and power. Bits can stay conveniently inserted when using deep sockets and more torque is transferred directly thru the 1/2 in. square drive anvil. There is no more torque loss through socket adapters or broken socket adapters. The kit comes with one 18V 2.0 Ah slimpack battery and a charger.