U-Shaped Design & Pointed End: The sharp chisel end of this U-shaped anchor stake allows you to easily drive it into the ground, lawn, sand, hard soil, and rocky terrain with a hammer. Plus, the trampoline stakes are long enough to prevent easy removal during hurricanes or strong winds. Hot-Dip Galvanized Steel: These anchor stakes are made of high-quality reinforced steel with a hot-dip galvanized coating. The thick hot-dip galvanized coating ensures the stakes won't rust, even in harsh weather conditions. 9mm Diameter & 30cm Length: The extra-thick 9mm diameter steel ensures the stakes won't break, even in extremely hard and rocky ground. These trampoline stakes are extra-long (30cm) for maximum grip in the ground. Suitable for Various Surfaces: These trampoline stakes are ideal for hard ground, forests, meadows, lawns, and other camping spots. They can be easily driven deep into hard ground without bending. Versatile Uses: These anchor stakes are suitable for securing tarps, trampolines, swings, slides, fences, garden decorations, tents, or nets.