Karin Pigment Decobrush Markers are ideal for artists of all skill levels for illustration, painting, hand lettering, calligraphy, and drawing projects. Each marker holds 2.4ml of opaque acrylic ink, and you can easily blend paint colors together to create tone-to-tone transitions. Available individually or in sets. - Karin Pigment Decobrush Markers - Grey Colors, Set of 12Karin Pigment Decobrush, GREY 12CT SET - Includes Neutral Gray 1 441U, Neutral Gray 2 442U, Neutral Grey 3 443U, Warm Grey 1 434U, Warm Grey 2 435U, Warm Grey 3 436U, Cool Grey 1 427U, Cool Grey 2 428U, Cool Grey 3 429U, Curry 3985U, Olive Green 371U, and Olive Black 343U.