This disengages the line from Jiffy-Tite quick connect fittings without removal of the clip. The set includes the following: 3/8 inches Jiffy-Tite disconnect, 1/2 inches Jiffy-Tite disconnect, 5/8 inches 39 percent Jiffy-Tite Disconnect, 5/8 inches 30 percentage Jiffy-Tite disconnect. It can be used on 1996 and newer GM vehicles, many 2004 and newer Daimler Chrysler vehicles, some 2005 and newer Mercedes vehicles, Harley-Davidson V-Rod, Freightliner, Peterbilt and Volvo.