Performance Tool W83113 Scissor Disconnect Tool Scis. Type Ford Fuel & A/C Line Sizes: 3/8, 1/2, 5/8 and 3/4" Easily separates spring coupling fittings on fuel lines and air conditioning systems on 1981 to current Ford and Chrysler LH Series. 1989 to current - GM 1/2 ton, 3/4 ton and 1 ton pickups.