The Stanley 150 Piece Mechanic's Tool Set features all chrome vanadium tools that meet or exceed ANSI standards. This tool set comes with everything a mechanic needs including (1) groove joint pliers, (1) needle nose pliers, (1) 1/4" pear head ratchet, (1) 3/8" pear head ratchet, (21) 1/4" sockets, (16) 3/8" sockets, (10) 3/8" deep sockets, (1) 1/4" extension bar, (2) 3/8" extension bars, (2) 3/8" spark plug sockets, (1) 3/8" to 1/4" adapter, (1) 1/4" bit H, (14) combination wrenches, (55) specialty bits, (18) hex keys all in a convenient carrying case. All tools meet or exceed ANSI standardsStanley