Abstract: A coupling for connecting fluid lines primarily for use in the automotive field comprised of a male end, a female end, and a one piece retaining element. The male end has an extending portion that is received in the female member and a conjoined attachment element made up of a one piece retaining ring with one or more leaf springs that engage with the female end upon connection. During engagement, the leaf springs are biased apart by a chamfer collar on the receiving end of the female member. The outward turned portion of the leaf springs provides a rounded edge for ease of engagement of the members, and has a means for manually releasing the connection simply by depressing a lever extension of the extended leaf arms. One or more O-ring seals are embodied to form a fluid tight connection, and once connected; the male and female members are swivelable.