Robot Lawn Mower Ground Nails: This accessory set includes 20 ground nails, each approximately 8.5 cm in length, designed to secure the boundary cable of a robotic lawnmower to the ground. Each nail features a hook for easy attachment, making it an essential item for robotic mower owners. Details: Length: approx. 8.5 cm, Head diameter: approx. 1.9 cm, Color: Black. High-quality materials: Made from strong, weather-resistant plastic, these ground nails offer excellent stability and durability. They maintain their shape and function even under tension, ensuring reliable cable fixation. Quick installation: Featuring a wide impact surface and a pointed tip, each nail can be easily driven into the ground. The boundary cable simply attaches to the hook on the nail head, allowing for fast and secure setup. Very stable and durable: Constructed from high-quality, durable plastic that resists weathering. The anchor head is designed to withstand tension without cracking or breaking. Note: All measurements are manually taken. Please allow 1-3 cm variation due to lighting and display differences. Colors may vary slightly from the image. Please refer to the actual product received.