Detailed Product Description Description: Concrete nail Specification: Diameter: 1.60mm--6.0mm Length: 13mm--130mm Material: 45# middle carbon steel. Feature: Flat head with grooved, round head with smooth shank. Diamond point Surface treatment: Black, electro-galv., white, blue, yellow Packing: 25kgs/carton, 48carton/pallet or be subject to the customer's request.