Prevost USI061251 Truflate automotive style 1/4" male NPT air coupler. This is a very high-quality Prevost coupler that features a non-marring, impact-resistant, high-grade composite body. This coupler is easy to use for anyone and is built for safety and high efficiency! The quick-release button on this coupler allows you to easily release plugs with one hand! It also purges the air on everything downline, such as air hose and tools, so that there is no hose whipping or sudden pressure releases.