The A/C Pro EXTREME Conditions refrigerant kit features the easy to use digital gauge that guides you through the recharge process. The premium formula protects against extreme temperatures and high use with a robust lubricant ingredient combo specifically designed to withstand high pressures seen with frequent A/C stops and startups. The approximately 18 oz. of R-134a and 4 oz. of additives are used to recharge a vehicles A/C system, seal common leaks in the rubber components and is compatible with all vehicles including hybrids and electrics.