The Leak Detection Kit for A/C Professionals. The Spotgun Jr. System is cost effective without lowering the quality of your work. Don't be fooled by inferior injection systems that are inefficient and will cost you more and lessen your results. Kit includes: Spotgun Jr. injector, PICO-Lite fluorescent leak detection light (3 AA batteries included), Universal A/C dye cartridge (SAE-J2297 certified and OEM approved dye) - Services up to 20 vehicles, R134a adapter, R12 adapter, UV protection glasses, Service stickers, and Storage Case. Hose Coupler has virtually no dye wastage when detached from the A/C system. Prevents contaminants entering the system. No messy spills to clean up. Lifetime warranty on every injection gun.