Product details of NITTO KOHKI JAPAN Hi Coupler Air Coupling-20PH,30PH,40PH ( 5/16'',3/8'',1/2'' HOSE )
    Import from Japan
    Top quality
    Universal purpose coupling for factory air lines and pneumatic tool material
    Excellent  durability
    For low air pressure use
    For quick connection and high flow
    For Low Air Pressure
    Universal purpose coupling for air lines
    Excellent  durability
    An excellent general purpose coupling for connecting factory air supply to pneumatic tools
    Steel coupling is suitable for air. Brass or stainless steel is suitable for water. Note that fluid will come out from the plug when disconnected.
    Critical structural parts of steel models are heat-treated for increased strength giving greater durability and resistance to wear.