E-Z Strokes are extremely versatile translucent underglazes. They have a broad firing range that allows them to be used on almost all clay bodies, and E-Z Strokes- translucent quality makes them suitable for use with a number of techniques, including ai rbrushing, antiquing, and brushwork. As a pure pigment-based paint, E-Z Strokes is the simplest form of fired color. Their intense pigments allow high definition and brilliant decoration for any project. You can use E-Z Strokes just like watercolors, in layers of transparent/translucent, bold, pure color, and, just like watercolors, you can intermix all the E-Z Strokes colors.E-Z Strokes are non-toxic and lead free. They are food safe when properly covered with a lead free clear glaze. E-Z Strokes are available in 1 oz. bottles.