SPEEDAIRE AIR COUPLER QUICK CONNECT ALUMINUM 3/8" MNPT 1/4" BODY MEETS ISO 6150 Max. Air Flow (SCFM):	 41; Max. Pressure (PSI): 300 Material: Aluminum; Seals: Buna-N Hose Connection Size (M)NPT: 3/8 (In.) Meets: ISO 6150 Temp. Range: -40 to 250 F