Shuttering nails, also known as concrete nails or formwork nails, are typically available in lengths ranging from 1 inch to 6 inches (25mm to 150mm) and diameters from 0.072 inch to 0.262 inch (1.8mm to 6.6mm). They are commonly made from mild steel and come in various gauges, such as 6, 8, 10, 12, and 14.