This all-in-one self outline marker features 6 colors that lays down a colored outline as you draw with the silver ink. These outline markers have 6 different complementary colors to provide the outline to the beautiful silver metallic inside. The outlining color is automatic as you mark or draw, creating wonderful art or craft projects. In this set of 6 all the inks are acid free as well. 6 Marker Colors Draws metallic silver and colored marker ink in one stroke Acid free inks Suitable ages 8 and up