1/4" NPT, Male, V Style, High Flow, Coupler, 300 PSI, Air Flow Of 74 Standard CUFT Per Minute, Sleeve Release Is A Push Type, Push Plug Into Coupler To Engage, Pull Sleeve Back To Remove, Perfect For High Volume, Low Pressure Applications, Maximum Temperature Of 250 Degrees Fahrenheit, Will Accept M Style & A Style Plus, However To Retain Maximum Flow Use V Style Plugs.