Premium quality collated concrete nails for the Dewalt DCN890 cordless nailer Base materials: Concrete (soft & hard), Masonry (concrete block with grout), Masonry (lime sand brick), Concrete (lightweight for placement on metal plate), steel, etc. Minimum thickness of base material (concrete): 60 mm Corrosion protection: galvanized coating 8μm made of ultra hard carbon steel (53-58HRC) 1005pcs per box, 15pcs nails on strip, length 1'' (25mm), thickness 3mm For use with tools: Fully compatible with all Dewalt DCN890 nail guns