A blacker black ink specially formulated for use on drafting film and in technical pens. Skins over quickly for faster drawing and drafting. More Info: CHARTPAK-Higgins Black Magic Drawing Ink. Black Magic Drawing Ink is pigment-based, waterproof and fade proof. It features a semi-flat black finish that produces the most opacity available. For use on drafting film, paper, and illustration board. This package contains 1 fl. oz bottle of Black Magic Ink. Non-toxic and conforms to ASTM D4236. Made in USA.BICW