OEMTOOLS 25042 Air Conditioner/Fuel Line Disconnect Tool Range: A (3/4 in), B (5/8 in), C (1/2 in) and D (3/8 in) Releases Spring Like Couplings on Fuel and Air Conditioning Lines on Most Ford and Chrysler LH Series Vehicles Also Used to Release Locking Mechanism on all 4 Size Ranges