Ultra-Hold is the leading standard for soft bonds on the market for over 15 years and is our most popular Maximum Wear adhesive. An acrylic adhesive with consistent 4+ week hold times. Ultra-Hold changed the industry by creating an acrylic adhesive that is better than the previously dominant silicone based adhesives. It removes easily and has a quick cleanup for a liquid adhesive. Plus it dries clear, and stays strong! Ultra-Hold is a rock solid choice for a long term hold. You're going to love it.