The Bosch™ GDX18V-1860C 2-in-1 1/4 in and 1/2 in bit or socket impact driver or wrench is for use with bits and sockets. This 2-in-1 goes from impact wrench to impact driver fast, letting you do two jobs with one tool. 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 impact driver or wrench's efficient, powerful brushless motor produces up to 1,860 in-lb of torque and 0 to 4100 ipm. In addition to three-speed or torque settings this impact driver or wrench also features special modes to help prevent work piece and fastener damage. The presets include modes for self-drilling metal screws and wood screws.