Designed for air conditioning lines, fuel lines, and transmission cooler lines. Contains 3/8 inch, 1/2 inch, 5/8 inch, and 3/4 inch spring lock disconnect tool for air conditioning lines on 1981 through 2003 Ford cars and trucks, 1994 through 2003 Chrysler and Jeep vehicles. 3/8 inch and 1/2 inch fuel line disconnect tool for Ford vehicles. Contains the 5/16 inch and 3/8 inch fuel line disconnect tools for GM and Chrysler vehicles. Transmission oil cooler line disconnect tool used on many GM and Ford vehicles.