concrete nail, good quality, best price.galvanized,Diamond for concrete working. Best-selling: the middle east, africa,amercia Concrete nail 1) Surface polished, galvanized. 2) Diamond for concrete working 3) Material: steel 4) Sizes: 1, 1.5, 2, 2.5, 3, 4, 5, 6 Length: 1---6 Shank diameter: 2.0mm---5.5mm 5) Packing: 1kg/color box, 25kg/carton