... smooth, grooved, spiral, twist Nail factory offer high quality concrete nails ,Ms Cathy tel:0086-159-53920529Shank diameter :1.2-5 ... : polished, galvanized , annealing , coated, Blue, zinc galvanizedFeatures: level cap, head, rod / grooveUsage: Construction, walls with staplesPayment: T/T 30%deposit ... 20-25kg/carton; bulk packing.Blacking concrete nail, Bluing concrete nails High quality concrete ...