VALUE PACK: This brass pipe fittings includes 106pcs:11pcs NPT reducing adapter;11pcs NPT male hex nipple;10pcs NPT male close nipple;12pcs NPT hex bushing;16pcs NPT hex head plug;11pcs NPT female coupling;7pcs NPT reducing coupling;11pcs NPT female hex head cap;17pcs NPT socket plug;1pc teflon tape PREMIUM MATERIAL: The brass fitting assortment kit is made of CA360 premium forged brass, thicker and stronger, durable, deep and accurate threads, high corrosion resistance, low magnetic permeability, and high-temperature ductility TEMPERATURE RANGE: Temperature Range of -65°F to +250°F (-53°C to +121°C). Before using pipe fitting and other connecting products, wrap an appropriate amount of Teflon tape in our kit to prevent air leakage WIDE APPLICATION: Our Brass Pipe Fittings are perfect for piping connections, compressed air, hydraulics, gases, grease, refrigeration, instrumentation, etc. Suitable for connecting air, water, fuel, oil, and inert gas lines PLEASE NOTE: Female and male National Pipe Taper (NPT) threads for connecting to female and male threaded pipes, NPT thread size does not have an actual diameter, only nominal pipe size