Stainless Steel 316 Cast Pipe Fitting, Square Head Cored Plug, MSS SP-114, 1-1/4" NPT Male Square head cored plug for closing and terminating the end of a pipe Male National Pipe Taper (NPT) threads for use with female threaded pipes Made from stainless steel 316 for strength Square head for increased leverage and use with a wrench Meets standards MSS SP-114, ANSI B1.20.1, and ASTM A351 for quality assurance