Robinairs No. 16357 universal dye pinpoints leaks in A/C systems. There are six twist-on cartridges that are 0.2 oz. (6 ml) each - enough dye for 6 applications. OEM approved and SAE certified. Service stickers are included. For kit numbers 16350, 16380, and 16355. Robinair, a Bosch Automotive Service Solutions brand, is a global leader in service tools and equipment based in Owatonna, Minnesota. Robinair is recognized throughout the world as the quality and performance leader in AC/R evacuation tools and this position has led to its success with the full range of products that serve the heating/ventilating/air conditioning/refrigeration (HVAC-R) and mobile markets.