Sometimes a brush just won't work for your specific needs — which is where Flo Line Detail Bottles step in! Create fine lines, squiggles, controlled drips and squirts; even use for writing with fluid media. Bottles are easily filled with custom mixes. Liquid acrylics, inks of all types, watercolor, and even watercolor masking fluid can be used in these inventive bottles. Includes three 1/2 oz. squeeze bottles with 0.5, 0.7, and 0.9 metal tips.