B&P Lamp 1/8 Ip Solid Brass, All Thread Nipples/Pipe - B&P Lamp 1/8 IP Brass, Running Thread Nipple, 1/2" long - Seamless 1/8 IP Solid Brass, Running Thread Nipples (3/8" O.D.). Excellent for outdoor or marine applications. 3/8" outside diameter.. Features Include: Seamless 1/8 IP Solid Brass Running Thread Nipples (3/8" O.D.). Excellent for outdoor or marine applications. 3/8" outside diameter., 1/2" Length, Designed by B&P Lamp Supply