Premium quality collated concrete nails for the Hilti GX3/GX100/GX120 nailer Base materials: Concrete (soft & hard), Masonry (concrete block with grout), Masonry (lime sand brick), Concrete (lightweight for placement on metal plate), steel, ... Minimum thickness of base material (concrete): 60 mm Corrosion protection: galvanized coating 8μm made of ultra hard carbon steel ( 53-58HRC) 1000pcs per box, 10 pcs nails on strip, length 27mm, thickness 3mm, excluding gas cartridge For use with tools: Fully compatible with all Hilti GX3/GX100/GX120 nail guns