High & Low Quick Couplers Adapters, Side fitting for A/C manifold gauge set (R-134A) type
Blue: Low side quick connector/adapter (1/4" SAE male flare)
Red: High side quick connector/adapter (1/4" SAE male flare)
Material: brass metal construction, quick and easy connect/disconnect
Adjustable quick coupler adapter for air condition on Auto/Car A/C R134a system