This 27 piece Automotive Socket Set is supplied with 1/4" and 1/2" industrial quality ratchets. The 19 sockets cover the common sizes between 6 and 32mm. The set also contains 16 and 21mm spark plug sockets. There are two extensions and two universal joints. The ratchets are tested to an extremely high level of torque. All supplied in a robust powder coated steel box.