IHI2375 Features: * Release of locking mechanism on all 4 sizes: A (3/4"); B (5/8"); C (1/2") and D (3/8") * Use with Ford air conditioning or fuel line spring locksThis is a very handy tool to have when working with Ford air-conditioning or fuel line spring locks. Most Ford vehicles are equipped with spring lock couplings. This tool is the necessary for the release of locking mechanism on all 4 sizes: A (3/4"); B (5/8"); C (1/2") and D (3/8"). Do not use with engine running. Release system pressure before disconnecting coupling. * Fuel Line and Air Conditioning Disconnect Tool Warranty: * Lifetime warranty does not cover abuse