Check the listing for details. 5Pcs NPT 1/2 304 Stainless Steel Male Thread Internal Hex Pipe Plug Fitting. Condition: New. Listed at 16.60 USD. Description:Material - The pipe plug fittings are made of 304 stainless steel with good strength and hardness, which has good anti-rust, anti-corrosion, and anti-oxidation performance. The structural design enables it to withstand high pressure and ensure long-term durability, suitable for indoor and outdoor humid environmentsFeature - The internal hex thread socket pipe cap is a mechanical fastener, and the male pipe threads are designed for connecting to female threaded pipes or fittings to provide a tighter sealing effect for the threaded hole. It is mainly used to close the end of the pipe or fittings to effectively prevent the leakage of gas or liquidEasy to Use - The pipe fitting plugs are designed with a hex drive countersunk head and can be quickly installed and removed.