SPEEDAIRE STAINLESS STEEL AIR COUPLER QUICK CONNECT PLUG 1/4" MNPT 1/4" Body HI FLOW 400 PSI Automotive Interchange Application: Use on End of Hose or Tool Inlet for Connection to Quick Coupler Material: 304 Stainless Steel Hose Connection: MNPT Connection Size: NPT 1/4 (In.) 1/4 (In.) Body HI FLOW Seals: HNBR; Max PSI: 400