These Forgefix Masonry Nails are heavy gauge universal nails, suitable for fastening all manner of fixtures in place on masonry applications. The nails are manufactured from austempered (heat-treated) high carbon steel for strength & durability, & are Zinc Plated for increased resistance to corrosion. Application: For fastening, cabling, timber form work etc. to concrete & masonry. Always wear suitable eye protection to the recommended standards. Zinc coatings prevent oxidation of the