The EC-3524 B/A Scotch-Weld BLUE is a 1/2 gallon kit of void filling compound manufactured by 3M in the United States. This adhesive is designed for filling voids and provides a strong and durable bond. Its blue color indicates that it is specifically formulated for industrial applications, making it ideal for use in a variety of industries including automotive, aerospace, and electronics. The unit quantity is 1/2 gallon, providing ample supply for various projects requiring this high-quality adhesive.