[Sturdy and Durable] A pack of 100 strong and durable plastic fixed pegs, essential for mounting all robotic lawnmowers. [Area Extension] allows you to extend your mowing area with stakes, and the boundary lines can be easily installed and fixed to the ground. [Easy to Install] The fixed spikes require little equipment, using a rubber mallet allows you to easily drive the spikes into the ground and connect the perimeter wires of your robotic lawnmower. [Works with All Robotic Lawnmowers] Compatible with all brands that require nails, hooks or mounting posts for robotic lawnmowers. [Weatherproof] High-quality pins are weatherproof, winter frost-resistant and provide durability in all conditions. Note: The data is all Manually measured, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.