This is the Ishimaru Bunkodo original fountain pen ink "Color Bar Ink." Like enjoying cocktails at a bar, this original ink allows you to choose colors to match your mood. ・Sapin (Winter Limited Edition) ・Santa Claus (Winter Limited Edition) ・Chouette (Online Limited Edition) ・Mimosa ・Cosmopolitan ・Campari Soda ・Mojito ・Final Approach ・Bullshot ・Marlene Dietrich ・Platinum Blonde ・Bloody Mary I have opened them to make color swatches, but otherwise, they have been stored without being used much. I think it's a waste to just leave them sitting around unused, so I'd like to sell them as a set. I believe the quality is fine, but please use them in fountain pens at your own risk, considering the possibility of deterioration. (I recommend using them with glass pens, etc.)