Tension at: When the lawn is wet or the property is on a slope with many ups and downs, the spikes give the robotic lawnmower better traction, no more digging in the lawn. With our M robot spikes for Worx Landroid you prevent your robot lawn mower from digging and leaving it in the lawn. Premium material: our spikes are made of 100% stainless steel. A material advantage is that the tips are stainless and therefore durable. Dimensions are 209mm x 2.5mm. In addition, 12 stainless steel screws are included in the delivery. Easy to install: simply center the spikes on the wheels and secure them with the screws provided. Beautiful and healthy lawn: The high quality spikes ensure a beautiful lawn. No more holes in the lawn while driving your Landroid Worx robot lawn mower. High compatibility: With a wheel size of 205 mm, the tips can be used for all S and M models of the Landroid robot lawn mower. S300 [WR130E] M500 [WR141E] M700 [WR142E] M1000 [WR143E] S450i [WR101SI] S450i [WR102SI] S500i [WR105SI] S450i [WR106SI] S700i] [WG8070i] M900 [WG758E] M1000i [WG796E.1] M1200i ID B [WR113MI] M500 2.0 [WR165E] M700 2.0 [WR167E]Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.