- For AC manifold gauge sets (R134a type only), 1/4" SAE, coupler interface fits R134A service ports
- Adjustable coupler (8-ball style) is compatible with all models of automobiles
- Accurate snap lock, knurled grip ring and detachable copper adapter makes the pair of quick couplers easy to operate, maintain and use
- High-level aluminum construction for the blue low-side and red high-side switch, plated bronze body, bronze construction for the ACME adapter
- Instructions for 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