Matco tools aluminum disconnect set. FUEL AND AIR CONDITIONING LINE DISCONNECT SET Set of 6 aluminum tools which disconnect the spring lock couplings on Ford and Chrysler air conditioning line Also works on fuel line quick connect couplings found on GM, Ford, and Chrysler The 5/16" size fits on push lock connectors found on Ford radiators and transmission lines Easy to use in confined spaces Set includes six sizes: 5/16", 3/8", 1/2", 5/8", 3/4" and 7/8"