yotijay R410A Adapters Kit Convenient Easy to Use Ejector Design Copper Accessories.1 R410a Adapters Kit, Packing Size 10cmx10cmx5cmR410a Adapters Kit is made of brass material, which is hard, stable in structure, not easy to break and deform, and resistant to high pressureR410a Adapters Kit can solve leakage problem well, the outer layer of the connecting nut has deep knurling, easy to install, convert 5/16" SAE charging vacuum port to 1/4" SAE pressure gauge hoseCharging Vacuum Port Adapter Kit adopts ejector design, which has strong sealing and better meets your use needsCharging Vacuum Port Adapter Kit has simple design and can be used directly without complicated steps, which is convenient and fastR410a Adapters Kit for Mini Split System. Charging Vacuum Port Adapter Kit Practical. Accessories Easy to Use Convenient Copper. Direct Replacement HEATING VENTILATION and AIR CONDITIONING Refrigeration Service. Ejector Design Solve Leakage Problem Brass.