?DO YOU KNOW THIS??Do you know the difference between the length measured by vernier caliper and thread size of pipe fitting? Do you know that these are two completely different units of measurement? ?IF YOU DON'T, TAKE A LOOK HERE?If you are not familiar with that, please choose the correct size according to method from the description page before purchasing ?SAFE TO USE?SUNGATOR 1/2 inch brass pipe fitting adapters meet specifications ASTM B584 and ASME/ANSI B16. These brass pipe fittings can withstand temperature rated up to 212F and pressure up to 300 PSI ?LONG LASTING?The 1/2'' male to female fittings are more resistant than iron and iron galvanized pipe fittings as our brass pipe fitting adapters are made of premium solid brass in prevention and protection of fittings against abrasion, corrosion, scratches, dulling and other damage after use ?VERSATILE APPLICATIONS?Provide nice solutions for pipe to pipe or pipe to fitting connections with 1/2'' male to 1/2'' female brass fittings. It can serves well as pipe extension connectors to the shower head, tub spout, spigot water plumbing line etc, and also these brass pipe extension can be used with grease, fuels and natural gas, refrigeration, instrumentation and hydraulic systems in low and medium pressure pipe line connections