Spears 450-G Series PVC Pipe Fitting, Plug, Schedule 40, Gray, 1-1/2" NPT Male Plug for closing the end of a pipe or fitting Male NPT threads for connecting to female threaded pipes PVC for corrosion resistance, high strength, and less weight than fittings made from metal Smooth interior finish for reduced friction and material buildup Meets NSF/ANSI 61 Annex G, NSF/ANSI 372 for quality assurance