Prevost IRC061202 3/8″ body 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! This coupler features a 3/8″ female NPT threaded inlet. This is a standard 1/4″ Industrial Interchange body coupler with 3/8″ Female NPT threads. This coupler is compatible with Prevost 1/4″ Industrial Interchange Style air plugs.