【High-quality materials】Made of sturdy plastic with higher stability, no burrs on the edges, reinforced head, not easy to break, the optimized geometry in the middle makes the nails firmly rooted in the ground, and the tip at the bottom is particularly easy to insert into the ground. Durable and long service life. 【Durable and weather-resistant】Our robot lawn mower spikes are stable and resistant to weather, heat, rain, UV rays, snow, and moisture. Even in winter and frost, they remain firmly rooted in the ground. They can last for years without having to be replaced, making them ideal for long-term installations. 【Quick installation】First hook the boundary wire into the hook-shaped head of the ground stake. The deep groove shape of the head prevents the wire from slipping. Then use a rubber hammer to drive the nails into the ground. Thanks to the solid and wide striking surface, the nails are fixed to the ground quickly and securely. 【Universal Size】Universally suitable for cables