Usage Tips: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 L 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- and therefore . Dimensions are 225mm 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 225mm and the pegs can be used for all L models of Landroid lawn mower robots. Specifications: TLWL-02 Material: Stainless steel colour: Silver Package Contents: 2 x traction wheel 12 x nails 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.