Product Description The Turbo SuperDam Plug Dam is a high-density foam rubber product designed for professional bowling pro shop use, specifically for plugging bowling balls without the need for messy clay. Available in both round and oval shapes, these plug dams feature a strong pressure-sensitive adhesive that ensures a leak-free seal during the plugging process. They are easy to remove with a plug cutter, making them a convenient and efficient tool for bowling ball maintenance. Each box contains either 120 circular or 100 oval dams in a range of sizes, catering to various plugging needs.