The 2 1/2 National Pipe Thread 304 Stainless Steel Hexagonal Head Plug – SP114 is a threaded pipe fitting used to seal the end of a pipe or fitting in a piping system. It features a six-sided head that allows easy tightening or removal using a wrench, ensuring a secure and reliable closure. It is built to MSS Class 150 standards and features ASME B1.20.1 NPT threads, ensuring compatibility with standard piping systems.