... 3. Machine galvanized,black color 4.25kgs/carton SQUARE BOAT NAILS Size: 1" to 4"25mm-100mmCharacteristic: iron wire, flat ... head, diamond point, straight square shankSurface: bright, zinc plated TypeBoat ... 4Types of HeadSquare HeadTypes of ShankSquare ShankSurface TreatmentPolished ,Galvanized Packaging1,2.5,5,10,20,25kg plastic ...