Check the listing for details. Dye Charge for R1234yf,UVdye, Enviro-Safe 3 cans & Brass charging hose. Condition: New. Listed at 51.99 USD. Enviro-Safe Dye Charge is fully compatible with mineral, ester and pag oils.For use in 1234YF automotive applications.Highly concentrated dye (fluorescent yellow)In some cases, you can see the dye with the naked eye.The dye works best with the use of a black light and UV glasses.This is the same color dye that most auto makers inject into the vehicle when new.This 4 oz can is enough dye for a full-size 1234YF auto or truck.DO NOT use in ammonia systemsDO NOT use in CO2 systemsCannot be sent to Alaska or Hawaii or exported to foreign countries except in pallet quantitiesGas propelledInstalls the same way as refrigerantCannot be added to a fully charged systemHOSE:R1234yf charging hose with R134a can tapBrass on both endsThis is perfect for adding sealants, oil charge, dye charges that have the R134a top on them to R1234YF systems.This item will NOT screw onto the top of a R1234YF can! The can tap is an R134a tap and the end of the hose is R1234YF. It will NOT work with valve style 134a cans.Enviro-Safe Dye Charge is fully compatible with mineral, ester and pag oils.For use in 1234YF automotive applications.Highly concentrated dye (fluorescent yellow)In some cases, you can see the dye with the naked eye.The dye works best with the use of a black light and UV glasses.This is the same color dye that most auto makers inject into the vehicle when new.This 4 oz can is enough dye for a full-size 1234YF auto or truck.DO NOT use in ammonia systemsDO NOT use in CO2 systemsCannot be sent to Alaska or Hawaii or exported to foreign countries except in pallet quantitiesGas propelledInstalls the same way as refrigerantCannot be added to a fully charged systemHOSE:R1234yf charging hose with R134a can tapBrass on both endsThis is perfect for adding sealants, oil charge, dye charges that have the R134a top on them to R1234YF systems.This item will NOT screw onto the top of a R1234YF can! The can tap is an R134a tap and the end of the hose is R1234YF. It will NOT work with valve style 134a cans.