Parker 2-2 MCN-B Brass Pipe Fitting, Close Nipple, 1/8" NPT Male, 3/4" Length (Pack of 10) Close nipple pipe fitting for connecting and extending pipes Male National Pipe Taper (NPT) threads on both ends for connecting female pipes Made from brass, for machinability and higher corrosion resistance than steel NPT thread for compatibility with a range of threads. More economical than steel Body Shape:Male Hex Nipple, Male Close Nipple, Male Hex Long Nipple, Female Hex Coupling, 90 Street Elbow, 45 Street Elbow, Reducing Bushing, Plug, Male Tee, Reducing Adapter,Pressure Range (psig):6,600, 5,200, 5,500, 5,600, 5,000, 4,500, 4,500., 6,000, 6,400, 5,300, 4,900, 7,500, 7,200, 5,800, 3,800, 4,600