Review on 🚘 Upgrade Your Car AC System: Orion Motor Tech AC Gauge Set with Self-Sealing & Puncturing R134A Can Tap, Ideal for R134a R12 R22 R502 Refrigerants. Includes 5FT Hoses Adapter Adjustable Couplers, Freon Charge Kit for Effortless Maintenance by Gregory Abercrombie

First of all I was impressed with the super fast delivery of this item. It's a beautiful, reliable, and easy-to-use device. My assessment comes from the fact that I let the vacuum sit for a few hours after creating it before checking the status of the vacuum and realizing that it had lost it. Since everything was rebuilt on this system, I was confused, so I tried again, and the same (loss of vacuum). The next time I vacuumed, I removed the low side and high side hooks and again waited a few hours. I reconnected the hoses to see if I had lost the vacuum. So there's a leak somewhere in the manifold.