WHK 4-Pack 1/2 MIP x 1/2 FIP Brass Pipe Fittings,1/2 Inch Male NPT Pipe x 1/2 Inch Female NPT Pipe, 1/2 NPT Female to 1/2 NPT Male Reducer Adapter.The 1/2 In Brass Pipe Adapter Fitting by WHK is solid and anti-rust.The size is Male NPT 1/2 thread x Female Female NPT 1/2 thread(MNPT X 1/2 INCH FNPT pipe adapter fittings),It has applied widen lines,such as shower head/arm adapter fittings, 1/2 NPT size tub spout adapter,1/2 NPT extension adapter connector,pipe extension,brass tobacco pipe adapter,1/2 nipple extension etc on grease, fuels, LP and natural gas, refrigeration, instrumentation and hydraulic systems.Attention Pls:NPT Thread is norminal pipe size,you need to check our size on photo,otherwise it can not fit your fittings or pipe. The 1/2 female to 1/2 male adapter are meet ASTM B584 and ASME/ANSI B16 and Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F).You will receive 4-Packs 1/2 inch brass nipple+1 PC tape seals,Use WHK NPT pipe fittings and enjoy it !