Replaces lost R-134a refrigerant and oil in automotive A/C systems System-safe leak sealer additive Seals common A/C leaks in rubber hoses gaskets and O-rings QwikBoost* chemistry for colder air up to 50% faster Eliminates moisture buildup and acid from A/C system Extends A/C system life ACME threaded top Recharging hose sold separately SHIPPING: CAN NOT SHIP 2ND DAY AIR AND CAN ONLY SHIP IN THE 48 CONTINENTAL UNITED STATES! NOTICE: This item can not be sold to California residents. Please click on the link below for more information. CLICK HERE.