MAXIMUM EFFICIENCY: Optimal automotive refrigerant recharge kit designed for a wide range of automotive A/C systems, compatible with R-134a, R-12, and R-22 freon types. CLEAR AND CONVENIENT DIALS:Featuring extra-large and color-coded dials with a Celsius scale for easy reading. Gauge rated at 250 psi (blue), hose with 3000 psi pressure and 600 psi max working pressure. EFFECTIVE SEALING MECHANISM: Equipped with two can taps featuring both piercing and self-sealing styles, ensuring compatibility with a wide range of can valves for a secure and leak-free connection. VERSATILE HOSE CONNECTION: The flexible piercing valve with a 1/4 inch fitting is compatible with outside diameter pipes, including 1/4 inch, 5/16 inch, and 3/8 inch, offering adaptability for different system configurations. Colour:Blue Material:copper Package Contents: 1 x R134A Refrigerator Freon Recharge Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.