Features: Designed for automotive A/C systems, this AC Leak Detector Dye helps professionals and DIY users quickly locate refrigerant leaks with confidence. The PAG oil–based formula blends smoothly into A/C systems, while the fluorescent agent becomes clearly visible under UV light, making small leaks easy to identify. With clear instructions printed on the bottle, application is simple and accurate, reducing guesswork, labor time, and repeat inspections during A/C maintenance and repair Specifications: Material: PAG refrigerant oil and fluorescent agent Size: 70 ml capacity, sized at 7.5 × 4 cm Package includes: 1 Pcs coolant dye Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays