The GreatNeck Fuel Pro Fuel Line Disconnect Tool has a special low-profile design that works in close quarters on GM, Ford and Chrysler vehicles where there is limited clearance between the fuel line fittings and fuel filters, fuel rails, or sending units. It includes interchangeable heads: 5/16-Inch, 1/2-Inch, 3/8-Inch to allow more usage. Comes with OEM limited lifetime warranty. GreatNeck has been a hand tool manufacturer since 1919. Our tool brands strive to bring value in design and function. We stand behind our brands and offer an industry-leading lifetime tool promise on workmanship and materials.