Usage Tips:Quick cool gas adjustable jointInclosed the high and low side couplerThe valve core puller is adjustable to fit the different valve coreExcellent for replacing valve cores without unloading or recovering the systemInternal ball valve retains load & allows access to automatic a / c systemsUse:At this point you must put on the gloves and goggles, and then you can replace the valve core as described below.1. unscrew the low-side (or high-side if that's what you're fixing) port cover2. connect the valve removal tool3. insert the extractor4. loosen the old valve core5. pull the valve core up6. remove the valve core7. the valve core is now out8. Place the valve core on the stem9. install the valve core10. put the protective cover back on the low side doorRed for the high side and blue for the low sideThe core of the extractor valve is adjustable to adapt to different of the valve coreExcellent for replacing the valve core without unloading or recovering the systemTips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect UseColour:Photo ColorMaterial:MetalPackage Contents:1 x Valve Core Remover Tool setOnly 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.