... my most important products , we started exporting it since 1990 umbrella head NailMaterial :Low Carbon Steel Wire.Dia.: BWG9 ,BWG10,BWG11 ... /2",2",2.1/2",3",3.1/2"Head: Umbrella head , Umbrella head with washer.Shank : Twist shank , Smooth shankFinishi : Electro ... dipped galvanized,colour galvanized, .Packing : according to customer's requirement. Umbrella Head Nail