If you want to make sure your air conditioning system is ready for the hotter months, the Honhill Manifold Gauge Set is just what you need. The easy-to-use adjustable couplers and 5ft hose make refrigerant charging and vacuum pump evacuation a breeze. Plus, with the handy storage case, you can keep everything organized and ready to go for your next AC maintenance session. This set is compatible with R134A, R22, R410A, and R404A refrigerants (but we won't judge if you don't remember what each oneSee full review