High-Quality Material: Our robotic lawnmower wheel size spikes are made of stainless steel and polished in an extra production step for a perfect look. All edges of the traction enhancer are chamfered. Traction Enhancement for Robots: When the lawn is wet or the terrain is sloped with many ups and downs, the spikes provide the robotic lawnmower with better traction, preventing it from digging into the lawn. This ensures your robotic lawnmower moves smoothly and stays on the lawn. Quality Screws: With 12 M4 stainless steel screws, they ensure easy installation of the robotic lawnmower spikes. Thanks to the countersunk screw holes, the screws fit perfectly into the spikes, ensuring a flawless appearance for your robotic lawnmower. Easy Assembly: Thanks to the intuitive attachment and the 6 included screws per wheel, the spikes can be mounted on the robotic lawnmower in no time. Use a cordless screwdriver or screwdriver to install it centered on the wheels. It was easy to screw on. Please pay attention to centering! Wide Compatibility: 205mm wheel size, compatible with Worx Landroid S and M, for the following models: S300 [Wr130E]; M500 [Wr141E]; M700 [Wr142E]; M1000 [Wr143E]; S450i [Wr101Si]; S450i [Wr102Si]; S500i [Wr105Si]; S450i [Wr106Si]; S700i [Wr101Si]; M800i [Wr11Mi]; M800i [Wg757E]; M900 [Wg758E]; M1000i [Wg796E.1]; M1200i-Id B [Wr113Mi]; M50000.0 2.0 [Wr165E]; M700 2.0 [Wr167E].