16356 Robinair Universal A/C Dye Cartridges with Four 1 oz. twist-on cartridges. Enough dye for 20 applications (OEM-approved and SAE-certified dye). Simple to use: Twist a cartridge onto the injector gun, hook up to the service port, and pull the trigger to inject the dye into the A/C system. Put your old lamp to use to spot the leak and you’re done.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov