12-Piece 3/8 in. Drive SAE Socket SetMilwaukees 12 pc. 3 8 in. drive ratchet set delivers ultimate versatility and access. The slim profile ratchet features a pivoting head that can be used as a ratchet, a nut driver, or any angle in between. Milwaukees proprietary sockets feature a parallel flat design for wrench compatibility and to deter rolling. Socket sizes are stamped into the flats for improved visibility. The kit is stored in a soft sided carrying case that includes a socket rail