Liquid PSA* Eliminates The Glue Drips, Runs And Smears That Ruin Model Surfaces The Best Glue For Windows! Liquid PSA eliminates the drips and smears that occur when you assemble models with intricate trim, window glazing and signs. Just apply a thin coat to the surface to be joined. It will quickly dry and turn clear, but remains tacky. Then, simply press together. Since the glue is dry, nothing oozes out to ruin the finish of an otherwise perfect model. Parts go together quickly and are repositionable. Washes off with water until dry. 4 oz. in applicator-style bottle. *Pressure Sensitive Adhesive