Parker Brass Pipe Fitting, Hex Long Nipple, 1/4" NPT Male X 1/4" NPT Male, 2" Length Long nipple pipe fitting for connecting and extending pipes Male National Pipe Taper (NPT) threads on both ends for connecting female pipes Hexagonal shape for increased leverage with a wrench during installation and disassembly Made from brass, for higher corrosion resistance than steel NPT thread for compatibility with a range of threads