COPIC VARIOUS ink refill for COPIC Ciao, Sketch, Wide and Original markers. Colour matches COPIC markers and can be intermixed to create your own unique colours. 25cc alcohol-based marker ink in plastic bottle with eye-dropper spout. One bottle can refill Ciao markers 17 times, Sketch markers 12-13 times, Copic Marker 9 times, or Wide markers 6 times.Pull the nib out of the marker and fill with a few drops of ink. Don't overfill. Copic nib tweezers are available and make nib-pulling easier.