Prevost PRVERP076251 (10 Pack) High Flow 1/4” Thread MNPT 3/8” Body Size Plug is a tapered male thread plug. Specifications: Package Size: 10 Plugs Type: Plug Thread Size: 1/4” Thread Type: MNPT Thread Style: Male Tapered Body Diameter: 3/8” Pressure: 232 PSI Accuracy: Precise dimensions, Close tolerances Hardness: Abrasion-resistant Construction: Treated steel Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.