Canada Fasteing Crop’s 3 1/2″ E.G. metal cap nails are designed for use in heavy-duty construction projects, including framing and sheathing. These nails are made with electro-galvanized steel to resist rust and corrosion, and feature a large head for superior holding power. The metal cap provides extra protection for the nail head, making it ideal for use in outdoor environments where weather can cause damage to exposed nails.