This Powerbuilt 6 Piece Disconnect Tool Set is designed to separate fittings found on A/C, fuel and cooler quick disconnect lines. It's perfect for a variety of vehicles, trucks, and other heavy equipment. This set includes 5/16", 3/8", 1/2", 5/8", 3/4" and 7/8" disconnect tools. This set will satisfy even the most demanding mechanics who don't want to waste time separating fittings on fuel, filter, transmission and air conditioning systems.Any automotive specialty tool makes an automotive repair or maintenance task easier, but Powerbuilt takes the concept of ‘help’ a big step further.Every package comes with professionally written usage instructions and photos that take you step by step through proper tool usage.Dependable Powerbuilt specialty tools offer power, precision and style. They meet or exceed applicable ANSI standards and have a lifetime warranty, all at affordable prices.