General description Adjustable R134A Quick Coupler AC Charging Fittings Connect Adapter is designed for efficient use in HVAC car air conditioning systems. It features high-quality aluminum and bronze materials for durability, along with a detachable copper adapter for easy maintenance. Technical specifications Inlet Diameter: 5.08mm Outlet Diameter: 7.98mm Thread Size: 7/16-20UNF Tank Adapters: 1/2 inch Acme Female (connect with hose) x 1/4 inch Male Flare (connect with coupler) Usage This product is ideal for AC R134A refrigerants and is designed for use with a diagnostic manifold gauge. It is suitable for AC charging, diagnostic, recovery, and evacuation work. Other information Blue: Low side quick connector/adapter Red: High side quick connector/adapter Brass metal construction for quick and easy connect/disconnect Glossy sleeve ensures safety, prevents injury and refrigerant loss, and protects against leakage