Refrigerant Applications Includes: Spotgun Jr. Injection System UV Phazer Leak Detection Lite (AAA battery) 2 (ea.) Low side service hoses 1 (ea.) R134a service coupler 1 (ea.) R1234YF service coupler 4 (ea.) 1 oz. cartridges of universal A/C oil 2 (ea.) 1 oz. cartridges of UV ExtenDye 2 (ea.) 1 oz. cartridges of Leak Guard One Shot Plastic storage case The world's best-selling A/C injection system for R134a/R1234YF vehicles all-in-one kit. The Spotgun is versatile and economical and injects a precise amount of dye/oil into the A/C system with no contamination and no waste. Spotgun Jr. Univeral Oil/UV Dye (1 oz.) kit for R134a/R1234YF applications and includes the UV Phazer (AAA) leak detection lite.