100x robotic lawnmower ground spikes hooks for boundary wire nails camping : With additionally reinforced head and anvil and optimized geometry. For attaching the cable wire in the boundary and search loop. Suitable for all robotic lawnmower models from Husqvarna, Gardena, Bosch, Honda, WORX, ROBOMOW, Viking etc... The head has been reinforced and an "anvil" has been added. By optimizing the geometry, it is no longer possible to knock it off. These hooks are more stable than the original hooks and are 100% compatible! Length: approx. 9.5 cm, head: 2 cm x 1.2 cm The cable no longer has to be buried, which is time-consuming: It can be easily laid on the lawn and fixed tightly to the ground with nails so that the robotic lawnmower can drive over it. After approx. 3 to 6 months, the cable is no longer visible because it has "grown" into the grass. You also have more flexibility for optimizations (distance from the lawn edge) and possible future changes in the garden. The need for hooks depends heavily on the shape of the garden: On straight surfaces, one nail is needed approximately every meter. On uneven or curved terrain, consumption increases. Technical data: Material: plastic, very stable and frost-proof, Color: black, Length 9 cm, Head size: 2 x 1.1 cm, Suitable for all common robotic lawnmower cables from e.g. Bosch, Gardena, Husqvarna, Stihl, Worx etc., Easy to attach to the ground with a rubber hammer, Quantity: 100 pieces