MettleAir 120-CB 3/8" NPT Female to 1/4" NPT Male Brass Pipe Adaptor/Adapter Straight Reducer/Reducing Coupling Male to Female Part # : 12-CB Thread 1 (A) : 3/8" NPT Female Thread 2 (B) : 1/4" NPT Male Material: Brass Type: Pipe Adaptor/Adapter Reducer Coupling