Qwik-Lok is a quick connect marine plumbing system that can provide increased productivity, higher quality and value. The heart of the system is the innovative Qwik-Lok socket that fits standard marine hose in popular 3/4" and 1-1/8" sizes. Installed in place of standard barbed fittings.Straight, Hose-3/4", Size-2-3/4" ? 1-3/4" ? 1-1/4"