Material: Lead-Free Brass, for your health and safety, it can be used for drinkable water. Litorange Brass for corrosion resistance, high temperature ductility and low magnetic permeability. Teflon tape and thread sealant are recommended for threaded joints for better sealing Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F) ,Rated pressure to 600 PSI WOG, 150 PSI for WSP. Adapter to easily winterize underground irrigation sprinkler systems, outdoor pipes, water lines, plumbing, homes, cabins, faucets, spigots, garden hoses, sillcocks, and hose bibbs by blow out method. Package Include:1 PCS 3/4" GHT x 1/4" Female NPT Adapter and 1 PCS 3/4" Male GHT x 1/4" Female NPT Adapter with 2 PCS silicone gaskets