... 1.Material: carbon steel,alloy steel 2 Standard:DIN,GB,ISO 3.Diameter: 2.5mm-4 ... Finish: Plain, zinc plated, galvanized, nickel plated. Black Standard model: DIN, GB, ISO, ANSI, ASME, JIB etc ... should be according to your order)What is Concrete Nail ? A concrete nail is a type of mechanical fastener ... finishing a basement. A concrete nail is a special fastener and is different than a common iron nail. ...