After five years of bench-flow and dyno testing and rigorous on-track racing, Jiffy-tite Quick Connect fittings have proven to be the leader in the industry. Jiffy-tite fittings are one of the most technologically advanced fittings on the market today and are the only fittings that reduce connection time in literally half the time of competitive products. Unlike threaded fittings, there is no wrenching required.