About this item: The transmission line disconnect tool is an automotive shop tool used for disconnecting transmission or fuel lines in vehicles. It comes in sizes of Tan 1/4", 5/16", 3/8", and 1/2". These tools are designed to safely disconnect the lines without causing any damage during repairs or maintenance tasks. Features and Benefits: Efficient Disconnect: These tools allow for quick and efficient disconnection of fuel and transmission lines without causing damage. They are designed specifically for this purpose, ensuring a smooth and hassle-free disconnection process. .