Low-Profile Design Quickly and Easily Disengages Jiffy-tite Quick-Connect Fittings Without Removal of the Clip. Teeth of the tool fit perfectly into tight tolerance of Jiffy-titeŽ connectors and when rotated allow the line to be pulled without damage to the connector or retaining clip so they can be reused. Includes four sizes: 3/8", 1/2", 5/8"-30% and 5/8"-39%.