SAKURA-Gelly Roll Glaze: Black. The dimensional ink leaves a raised ink line for writing with shiny texture. In addition to paper, Glaze pens can write on nonporous surfaces such as plastic, coated paper, acetate, vellum, and glass. Create a stained glass effect by using on translucent and transparent surfaces. Glaze ink also resists water and can achieve a batik look. Glaze's shiny colors and texture looks similar to heat embossing or professional printing without the extra fuss. 0.8mm ball produces 0.7mm bold line. Package contains two black glaze ink pens. NOTE: Glaze is a special craft pen with ink that flows thickly and takes time to dry, therefore it is not ideal for any lengthy writing. Drying time depends on the surface -- from a few minutes on paper, to 10 minutes on glass.