With special materials, concrete nails are specialty nails compared with common iron nails . In practical application, people also used to call it masonry nails. These nails are the most popular fasteners for securing objects into masonry and other hard & brittle materials. There are complete types of concrete nails, including galvanized concrete nails, color concrete nails, black concrete nails, bluish concrete nails with various special nail heads and shank types. Shank types include smooth shank, twilled shank for different substrate hardness. With above features, concrete nails offer excellent piecing and fixing strength for firm and strong sites.