ITEM NAME:AC Manifold Gauge R134a Hose Conversion Quick Adapter Fitting Coupler High Low Description: 100% Brand New and High quality. Blue, Low side quick connector/adapter, 14mm Red, High side quick connector/adapter, 16mm Sold brass metal construction safe design to protects against injury and refrigerant loss Purpose: Used for refrigerant injection in automobile air.Manifold hose connections on both adapters: 1/4" SAE male flare(capped in pictures). Blue, Low side quick connector/adapter, 14mm. Red, High side quick connector/adapter, 16mm. 1 x Blue connector/adapter.