Hex Drive Plug 1/8 in Nominal Pipe Size Brass Black Zinc-Plated Class Class 1000 Male NPTF 3/8 in Outside Diameter 1/4 in Overall Length 1 000 psi Maximum Operating Pressure 850 psi Max Steam Pressure Plug Drive Style 0.30 in Hex Includes Pre-Applied Thread Sealant No Includes Seal No Magnetic No Black