Large flat head, galvanized and stainless have factory, could avouch for price and ... steelSize: 3/8" to 10"10mm-250mmCharacteristic: iron wire, flat head, diamond point, straight and smooth shankShank diameter:1.5 ... -4.5mmHead diameter: 3mm-10mmFinish: polished, electro galvanized, hot dip galvanized, ...