Tracer Products Tracerline TP-8627 Ez-Ject Leak Detection Kit features the Opti-Lite high-intensity, 6-LED blue light flashlight that makes even the smallest leaks clearly visible. Another important component of the kit is the Ez-Ject multi-dose dye injector, a fast and easy way to add fluorescent dye to multiple A/C systems. A turn of the handle injects an exact amount of dye into the system. The kit contains a 0.5 ounce universal A/C dye cartridge that services up to 14 vehicles. Also included are a one-ounce bottle of Dye-Lite All-In-One dye for oil, fuel, ATF, power steering and hydraulic systems; a one-ounce bottle of Dye-Lite coolant dye, an 8-ounce spray bottle of Glo-Away dye cleaner, and fluorescence-enhancing glasses.