BIC's manufacturing processes have been refined to make high quality products available to all consumers. This everyday performance is the result of high technology facilities and equipment, integrated production processes, well-trained employees and a rigorous quality control system. These markers feature a highly visible ink specially-designed to adhere to glass. Produces vivid colors on both transparent and dark surfaces. Easily removable with a wet cloth. Great for professional or decorative use. Marker Type: Glass; Color(s): Pink; Yellow; Tip Type: Bullet.