Steel Concrete Nails Material:45# Medium Carbon Steel Finish: Electric Galvanized/ Hot Dipped Galvanized Length:16mm-150mm Shank Diameter:1.60mm-5.50mm Package:1000G/Box, 25 Boxes/Carton Usage:Concrete, Brick, Masonry, Hard Timber Wide Range of Model, Please Inquire Us if the Model You Need Is Not in the Description