Features [ Traction]: When the lawn is wet or the property has many slopes and slopes, the nails give the robot lawn mower better traction, no need to dig on the lawn anymore. With our Robotic Spikes for Landroid, you can prevent your lawn robot from digging out and staying on the lawn. [Premium Material]- Our spikes are made of stainless steel. A material-related advantage is that the nails are rust-resistant and therefore . Dimensions are 205mm x 2.5mm. In addition, 12 stainless steel screws are included. [Easy Installation and Beautiful Healthy Lawn]: Just put the nail in the center of the wheel and fix it with the included screw. High-quality spikes a beautiful lawn. No more holes in your lawn with your Landroid lawn mower robot. [High Compatibility]: The wheel size is 205mm and the pegs can be used for all S and M models of Landroid lawn mower robots. S300 [WR130E]; M500 [WR141E]; M700 [WR142E]; M1000 [WR143E]; S450i [WR101SI]; S450i [WR102SI]; S500i [WR105SI]; [WR11MI]; M800i