If you’re looking to have everything in your engine bay as top-notch as the rest of your ride, having beautiful firewall rings might be just what you need. With a threaded back and ABS nut you can unsure and nice tight fit on almost any fire wall thickness.
With all sizes you need for a generic AC kit like from Vintage Air or hidden Heater Cores.
Kit includes.
1: FIRE WALL RINGS FOR 3/4" HEATER HOSES AND 10# AC HOSES
2: FIRE WALL RINGS FOR 5/8" HEATER HOSES AND AC #8 HOSES
1: FIRE WALL RINGS 1/2" HEATER HOSES AND AC #6 HOSES
and a builder box.