Each yard stake is approximately 16 inch long;10mm diameter;with 2 inch hook end for secure fastening to the ground. Galvanized-They're applied Premium Hot-Dip Galvanizing with thicker coating meaning they will not rust in wet/damp conditions. Made of premium heavy duty and weather-resistant steel rebar, reliable and long use. Chisel pointed ends, for hard clay or rocky soils, makes penetrating and removal easily. You can use a hammer make the rebar stake inset into the ground deeper without bend.