SAKURA-Gelly Roll Glaze: Gloss. 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 clear/transparent 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.