common concrete wire nails head:round,square material:Q195steel wire rod shank diameter:1.3~7.6mm head diameter:2.0~12mm common concrete wire nailsmaterial:Q195steel wire rodhead:roud,squareshank diameter:1.3~7.6mm head diameter:2.0~12mmThe shank diameter, head shape, head diameter and the length of shank cal allbe made according to your requirement.,etc common concrete wire nails