Tim Holtz Alcohol Ink Hardcore Art Panels are a versatile substrate for fine art and mixed media techniques using Tim Holtz Alcohol Inks, Alcohol Pearls, Mixatives and Blending Solution. Hardcore Art Panels are double-sided vinyl with an Engineered-Wood-Rigid-Core MDF board offering an ideal surface that remains rigid and flat. Ready to use bright white, lightly textured surface. This package includes three square pieces measuring 4" x 4" each.