Copic Ink can be used to refill any of the 4 marker types: Sketch, Ciao, Classic and Wide. This product design also comes with an easy to use nozzle and makes refilling your Copic markers easy. Overall, Copic Ink is a must have for artists who use their Copic markers a lot and for anyone looking to start experimenting with alcohol inks! Copic inks can also be used for alcohol ink art, resin and mixed media. · 358 colours · 12ml bottle · Permanent, non-toxic, alcohol-based ink · Consistent colour guaranteed · Can also be used for alcohol ink art, resin and mixed media The number of times you can refill each type of Copic Marker: · Classic: approx. 5 times · Sketch: approx. 7 times · Ciao: approx. 9 times · Wide: approx. 3.5 times