Prevost Silver Air Plug Coupler 1/4" FNPT - IRC061201 (5 Pack) 5 Brand new Prevost IRC61201 1/4" body air coupler. These are very high-quality Prevost couplers that feature a non-marring, impact resistant, high grade composite body. These couplers are 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 1/4" female NPT threaded inlet. These couplers are compatible with Prevost Industrial Interchange Style air plugs and has a 3-year manufacturer's warranty. *  Specifications: 1/4" Female NPT Easy to Use Anti-marring Heavy Duty Composite Body Steel Inner Construction This listing is for Five (5) Prevost coupler. *Warranty valid only if used with Prevost high quality steel plugs.