1SIZE SPECIFICATION: This is a 3/8in NPT male to 1/4in NPT female pipe thread brass pipe fitting adapter. NPT thread size refer to size of the thread, not equal to length or width of the fitting measured by common tools like tape measure or vernier caliper 2SAFE TO USE: Brass pipe adapter fitting meet specifications for ASTM B584 and for ASME or for ANSI B16. These brass pipe extension fittings can withstand rated up to 212/300 PSI and long period of wear and tear 3LONG LASTING: 3/8in to 1/4in brass pipe fitting adapter is more long lasting than iron and iron galvanized pipe fittings as brass nipple extension fittings are made of solid brass with strong erosion resistance, low magnetic permeability and long service life 4WIDE APPLICATION: Complete the pipe connecting work with brass pipe adapter fittings. These fittings would provide quick connecting solution for pipe to pipe, pipe to fitting. They can served well as pipe extension connectors for shower head, tub spout, outlets, plumbing line. These brass plumbing pipe fitting adapters can also used with grease, fuel, low pressure and natural gas, refrigeration, instrumentation and hydraulic systems in low and medium pressure pipe line connections 5PACKAGE INCLUDE: There are a total of 10pcs of 3/8in NPT male to 1/4in NPT female brass pipe fitting adapter, enough for you to use, meet your needs well 10 x Brass Pipe Fittings