Appion MH120006EAK 1/2 Diameter Hose, 3/8 FL to 1/4 FL Vacuum Certified Refrigerant Hose, 6, Black

but slightly overpriced. The hose made of very strong rubber, keep that in mind.

They seemed to work very well. For hoses of this size and quality, this was a pretty good value. They greatly sped up the evacuation process, but probably not by as much as they said it would.

Saves me time during vacuum. Good quality hose