2 Brass Vacuum Pump Hose Adapters ACME Male Thread LH 1/2 Inch Female Thread SAE 1/4 Inch for R-12 R-134a R-1234yF

Universal Adapter: 1/2" ACME Male Left × 1/4" SAE Female. Simply screw in to convert R-12 or R-134a connectors into R-1234yf refrigerant tanks. Its one-piece brass construction ensures continuous leak-free vacuum, allowing for one-step vacuum sealing of R-1234yf systems. Quick connector: Left-hand thread with a 60° conical surface; easy to seal by hand. Corrosion resistant and wear-resistant, rust-proof, compatible with automotive and other connector standards.