Drawing Ink + Cleaner: Koh-I-Noor Black 3/4 oz Universal Black India Drawing Ink with Higgins 2.5 oz Pen Cleaner Black India ink is waterproof and opaque Easy fill spout For Fine Art, airbrush, drafting and technical drawing Higgins pen cleaner can be used on pens, lettering instruments, brushes etc Pen cleaner is non-toxic