Quick cool gas adjustable joint includes high and low side couplers. The valve core puller is adjustable to fit different valve cores. Ideal for replacing valve cores without unloading or recovering the system. Internal ball valve retains charge and allows access to automatic A/C systems. Usage: Put on gloves and goggles before proceeding. 1. Unscrew the low-side (or high-side if applicable) port cover 2. Connect the valve removal tool 3. Insert the extractor 4. Loosen the old valve core 5. Pull the valve core up 6. Remove the valve core 7. The valve core is now out 8. Place the new valve core on the stem 9. Install the new valve core 10. Replace the protective cover on the low side port Red for high side, blue for low side. The valve core extractor is adjustable to fit various valve cores. Suitable for replacing valve cores without releasing refrigerant from the system. Note: Product may vary slightly between batches in color or design due to manufacturing updates. This does not affect functionality. Color: As shown in photo Material: Metal Package Contents: 1 x Valve Core Remover Tool Set (other items not included) Light reflection and display settings may cause slight color variations between the image and actual item. Measurement may vary by +/- 1-3 cm.