Easily separate spring coupling fittings with this scissor-style disconnect tool. Features a low-profile design to fit in tight spaces. Easily separates spring coupling fittings on fuel lines and air conditioning systems Essential for fuel filter replacement and service on many late model vehicles Special low-profile design works in close quarters Use to access the center port on GM fuel tank sending units Alloy steel construction Sizes markings are as follows: A = 3/4, B = 5/8, C = 1/2, D = 3/8 in. 1981 - Current Ford and Chrysler LH Series 2001 - current GM 3/4 and 1-ton trucks with the Duramax diesel engines