Recharge your R-1234YF system easily and accurately with the A/C Pro Ultra Synthetic R-1234YF Auto Refrigerant Kit with Digital Gauge. This A/C Pro refrigerant is specifically designed for all vehicles with R-1234YF systems with an advanced formula and an easy-install snap-lock coupler. Formulated with special additives, this AC refrigerant delivers colder, drier air that improves refrigerant performance within the AC system. The advanced formula also works as an AC leak sealer to quickly seal common AC leaks in rubber O-rings, gaskets and hoses. Additives help prevent the effects of harmful contaminants such as oxygen, extending the AC system life. This car AC recharge kit makes recharging the AC system easy to do by yourself. This kit includes a digital gauge for easy use and a YF snap-lock coupler that works with both self-sealing valves and piercing can tops, plus a reusable, extra-long, braided AC charging hose for convenient recharging. Take on car care yourself by recharging your vehicle's AC with A/C Pro. Nothing cools like A/C Pro.