Clavos supplies concrete construction nails galvanized steel corrosion resisted or phosphated steel treated. This nail fastener is made of steel wire through wire drawing, cold upsetting and polishing processes. According to cap types, we supply flat round head concrete nails and countersunk head concrete nails. Well sold nails sizes: 3.25 x 1" , 3.66 x 1/2", 4.0 x 2", 4.0 x 2 1/2", 4.1 x 3", 4.1 x 4". Common packing method applied for concrete nails is 1KG/Box, 25Box/Carton. Concrete nails with magnetic tips are also supplied.