It is a 15-color set of markers of the aqueous pigment ink use that does not bleed-through without being blurred even to write it on a piece of paper! Because the [Features]-aqueous pigment ink, it does not navigate back even to write it on a piece of paper. -I is suitable for paper imitation paper, construction paper, cardboard etc.. When dry, it is water resistance does not flow through the water. I will be able to also be used for cloth, wood, glass, plastic, metal or the like. It is economical ink cartridge nib and because he is replaceable. Small extra-fine two uses in one of them. , Line thickness: 0.7 ~ 1.2mm fine, extra-fine 0.5mm [set contents] black, blue, red, green, yellow, brown, pink, purple, orange, light blue, light green, light brown, gray, pale orange 15-color set of red purple