OrionMotorTech Adjustable R134A Adapter Fittings Quick Coupler High Low AC Freon Manifold Gauge Hose Conversion kit, 1/4" SAE HVAC Fits A/C manifold gauge sets (R-134A), coupler interface fits with R134A service ports, 1/4" male flare Adjustable coupler (5-ball style) is compatible with all models Accurate snap lock & knurled grip ring for easy operation, detachable adapter for longer maintenance Aluminum switch, bronze ACME adapter, and nickel plated bronze body Method of Use: Connect bottoms with vehicle's R134A service port; connect the ACME adapter with the refrigerant hose; turn on/off the switch at top to turn it on/off Premium quality: aluminum construction for the Blue &amp; Red Switch; nickel plated bronze for the body; bronze construction for the ACME adapter. Constructed with accurate snap lock and knurled grip ring; offers easy operation and great performance; detachable copper adapter for easy replacement. Unlike other products which only fit European models, this push-able adjustable coupler (8-ball style for complete seal) provides universal compatibility for all manufacturers and models. In addition, the adjustable (rotate to adjust) coupler interface fits with R134A service ports. Copper 1/4&#034; male flare is included for your convenience. Perfect A/C manifold gauge set for your car. Dimension: A - Min Height: 1-3/4 inches B - Max Height: 2 inches C -Knurling&#039;s Dia: 1-1/4 inches D - OverallWidth: 1-7/8 inches E - SingleCoupler Weight: 0.32 lbs F - Single Adapter Weight: 0.04 lbs