Canada Fasteing Crop’s 2 1/2″ E.G. Plastic Cap Nails are an excellent choice for securing roofing and siding materials. These nails are made of electro-galvanized steel and have a plastic cap that provides extra protection against weathering and water damage. They have a smooth shank and are designed to be easy to drive into place. These nails are an affordable and effective solution for all your roofing and siding needs.