Glue Dots(R) Ultra-Thin Dots with Dot N Go Dispenser provide a permanent bond without staining. The Dot N Go dispenser fits in the palm of your hand for easy application. Ultra-Thin Dots provide a strong permanent bond with no bumps or bubbles, making them the ideal adhesive for working with thin modeling materials. Ultra-Thin Dots are non-toxic, acid free and photo-safe so they're great for model railroading projects such as permanently applying printed or photographic signs to signposts, billboard frames, building walls, bridges, freight cars and more without worry of drips or spills. Their thin profile makes layering of materials easy. The Ultra-Thin Dots' adhesive material is clear.