The CPS Automotive LeakGuard OneShot A/C supplement leverages the company's LeakGuard technology to effectively find and permanently stop A/C leaks as they form. An included dose of A/C ExtenDye fluoresces leaks and includes an enhanced additive package that protects and extends the life of the compressor, its components and the oil. The cartridges work with the company's Spotgun Jr. injection system. In addition, they will not harm the A/C system or recovery equipment, says the company. Available are the LeakGuard OneShot Cartridge (No. 480501), the LeakGuard OneShot Cartridge Winged 1 oz (No. 480501EU), the LeakGuard OneShot Injection Kit (No. 480550) and the LeakGuard OneShot Winged Injection Kit (No. 480550E).