Simpson Strong-Tie Nail Stopper is designed to protect water pipes and electrical lines from being punctured by nails during construction. These nail stoppers are installed over utilities that pass through framing members to provide a durable shield. Made from 16-gauge galvanized steel, they strong and reliable protection with a galvanized finish that resists corrosion. The product comes in two sizes: the NS1 measures 1-1/2 inches wide by 3 inches long, and the NS2 measures 1-1/2 inches wide by 6 inches long. Each package includes one nail stopper, making it easy to use in various framing applications.