https://trutechtools.com/yellow-jacket-93889-maxflow-evacuation-kit/
Yellow Jacket 93889 MaxFlow Evacuation Kit with 1/2" Vacuum Hose plus 5/16" Core Tool | TruTech...
5/16 inch Core/Vacuum/Charge Tools removes cores that cause restriction, 3/8 inch x 5/16 inch 45 degree, Opens up over 90% of internal diameter of access hose,...