The Unifix Galvanised Clout Roofing Nails come in various sizes and are made of durable galvanised steel. These nails have a galvanised finish, making them resistant to corrosion and ideal for use in roofing projects. With a 2.5kg pack size, these roofing nails are perfect for DIY enthusiasts and professionals alike, providing a secure and long-lasting fastening solution for roofs and other outdoor structures.