COPIC® Ink Refills allow you to refill your markers with any of the 358 colors in the COPIC® color system. Different colors are available for different marker types. This ink refill product supports Ciao, Sketch, and Classic markers. How to Refill COPIC® Markers: Simply remove the broad nib of your COPIC® Markers and insert the COPIC® ink nozzle directly into the opening. Be sure to asses the scale on the side of COPIC® ink Refill bottles to avoid over-filling your markers. Overfilling markers will result in leaking COPIC® Markers. Refilling little by little over time will best ensure the longevity of your COPIC® Markers. Refills COPIC® Ciao markers 9 times COPIC® Sketch markers 7 times COPIC® Classic markers 5 times Usage Notes Cap colors to each COPIC® Ink Refill will match the colors of your COPIC® Markers along with matching color codes to ensure color consistency and quality COPIC® Ink is a flammable alcohol ink – always store away from direct sunlight and fire Use in a well-ventilated area Always store out of reach of small children For COPIC® Multiliner pen refills, see: COPIC® Multiliner SP Ink Cartridges A COPIC® Multiliner SP Ink Cartridges B