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. This part works on 8mm Jiffy-tite connectors found on turbo cooling lines on 3.6L GM LF3 engines and some European vehicle engines. Fittings are found on oil cooler lines used on transmissions and radiators and on other applications. Also found on Harley-Davidson V-Rod.