1/2PT Male to 3/4PT Female Thread Straight Water Meter Quick Coupling Product Name : Water Meter Coupling;Material : Brass Male Thread Diameter (Approx.) : 21mm / 1/2PT;Female Thread Diameter (Approx.) : 25mm /3/4PT Total Dimension (Approx. ) : 47 x 29mm / 1.9" x 1.1" (L * Max.D);Color : Gold Tone Weight : 51g Package Content : 1 xWater Meter Coupling