Brennan 5406-HP-02-SS Stainless Steel Pipe Fitting, Hex Head Plug, 1/8" NPT Male Plug for closing and terminating the end of a pipe or fitting Male National Pipe Taper (NPT) threads for connecting to a female pipe or fitting Hollow hexagonal head for increased leverage and use with a wrench Made from stainless steel 316 for resistance to chloride corrosion Meets SAE J514 standard for quality assurance