|EK SUCCESS- Writer Marker Pens Chalk Collection. These pens are designed for writing on dark and brightly colored papers. The pigment ink is acid free; archival quality; lightfast; waterproof; fadeproof; and non-bleeding. Once it is dry it resembles a soft chalk pastel color. This package contains one pen with dual tip (0.5mm and 1.2mm). Available in white. Imported.