The Tracerline TPOPUV19 UV Leak Detection Kit is designed specifically for diagnosing modern R-1234yf A/C systems to meet the industry trends. Each kit comes complete with three Mini-EZ dye cartridges, an EZ-Ject dye injector assembly, an R-1234yf hose/coupler and purge fitting, and a 2 oz. (60 ml) bottle of GLO-AWAY Plus florescent dye cleaner. Also included in the kit is the TPOPUV OPTI-PRO UV cordless, violet light leak detection flashlight.