A/C Pro ultra synthetic refrigerant kit refill features a specially designed formula that helps your vehicle’s A/C produce the coldest air. The approximately 10 oz of R-134a and 2 oz of additives are used to recharge a vehicle’s A/C system, seal common leaks in the rubber components and protect and extend the A/C system’s life by eliminating acid and moisture buildup. This A/C recharge kit refill contains the same formula found in the A/C Pro kit, ACP-100V.Formula with 2X cooling boosters vs the next leading brand of A/C recharge kits, independently tested to deliver the coldest air from your vehicle’s A/CContains leak sealer to seal common A/C leaks in rubber hoses, gaskets and O-ringsProtects and extends A/C system lifeFast and easy 10 min job