Check the listing for details. Enviro-Safe R134a Replacement Refrigerant w/Dye & Stop Leak Kit. Condition: New. Listed at 42.00 USD. DO NOT USE IN AMMONIA SYSTEMS! DO NOT PULL A VACUUM ON THE A/C SYSTEM. If you plan to pull a vacuum or are charging a larger system or dual air system such as on a van, suburban, or SUV, use Enviro-Safe Industrial Replacement refrigerant. Bring your a/c performance back to the original cold air! This is the original Enviro-Safe Refrigerant that we first introduced over 20 years ago. This kit includes: ​2 cans of Enviro-SafeReplacement with dye 6 oz cans (equivalent to 2lbs of) 1 can of Enviro-Safe Stop Leak 4 oz CAN 1 each system tag Operates at lower head pressure Offers improved cooling properties and performance Compatible with most refrigerant oils Non Ozone depleting Non Global warming Use up to 60% Less Made in America! Enviro-Safe has been manufacturing hydrocarbon refrigerants for over 22 years. Flammable to an open flame or spark and proceed with caution if used in systems designed for non-flammable refrigerants.