Check the listing for details. HANSEN 41 Quick Connect,Plug,3/8" Body,1/4"-18 31C986. Condition: New. Listed at 12.04 USD. Quick Connect Hose Coupling, Universal, Steel, Plug, Female, NPT, Coupling Size 3/8 in Universal interchange steel quick-connect air coupling plugs are the male end of coupling sets. Also called nipples, they're inserted into the coupling bodies (female ends) to connect tools to air, water, or fluid lines. Steel couplings are hard and resilient with more damage resistance than softer metals and a wide working temperature range.Universal interchange quick-connect air couplings are designed to work with other interchanges accepting multiple styles of nipples, including industrial, Tru-Flate, and ARO. The push-to-connect style has a protective sleeve that slides forward until the plug ejects. The socket's shut-off valve eliminates air leaks in automotive service and repair, factory automation.