1/4″ NPT Male Internal Hex Pipe Fitting, 3 Pcs Brass Pipe Plug Fitting Assort…
This internal hex pipe fitting is suitable for sealing intake manifolds, water pump ports, water temperature and oil sensor holes, and water holes in engine blocks. It also prevents the leakage of air, steam, gas, water, oil, and pressurized fluids in machinery, accessories, or piping systems.