Check the listing for details. AC Air Condition QUICK COUPLER Adapter High and Low Manifold Quick Connect. Condition: New. Listed at 105.33 USD. High- and Low-side Manual CouplerFeatures and Benefits:Compact DesignSix-ball couplerQuick connect design with an integral safety sleeveStraight or 90 degree configurationKnurled valve handle for easy operationNOT FOR USE WITH 1234YFField service couplers connect to our special Enviro-Guard hoses to allow access to service ports on automotive A/C systems. The quick-connect design has an integral safety sleeve, which protects against injury and refrigerant loss if the coupler is disconnected under pressure. The compact design easily fits into tight quarters, which is especially handy for retrofits. Six-ball couplers provide a more stable grip on the fitting than do couplers with four balls.High- and Low-side Manual Coupler