G7 Car A/C UV Leak Detection Kit – 3 x 30ml high density Dye plus 1 x 30ml de-ionised coolant leak dye + Torch & Batteries. 1 x 30ml high density de-ionised car coolant, radiator & boiler UV dye. 3 x 30ml High-Density UV Dye compatible with R12, 134a and 1234yf gases and Hybrid cars.