Weldable aluminum bungs make nozzle installation easier with thin-walled intake tubing. Simply drill the intake tube, drop the part in the hole, and TiG it. Your nozzle will then have a strong threaded connection that can be used with confidence. A stepped side profile makes locating the part in the hole easier during assembly.
1" diameter, 1/4" thick, 1/8" NPT threads for most popular nozzles. Can also be used with nitrous nozzles, boost port fittings, etc.