QuakeHold! Clear Museum Gel is a see-through product that protects glass pieces, glassware and crystal from toppling and shattering. Designed primarily for glass-on-glass applications, Clear Museum Gel can also be used on other surfaces. It's easy to use — simply scoop a small portion of Museum Gel out of the jar and roll it into balls. Then place it on the bottom of the object, press down lightly, and twist the object into position. The gel gradually flows across the base of the object until it creates a superior, invisible bond. Clear Museum Gel is designed for use on flat, level surfaces only and takes up to one hour to set properly. A 4 oz jar secures an amazing 300 items!