Features: [Traction] When the lawn is wet or the property has many slopes, the nails provide better traction for the robot lawn mower, helping to prevent digging into the lawn. With our L Robotic Spikes for Landroid, you can help keep your lawn robot on the surface and avoid damage. [Premium Material] Our spikes are made of stainless steel, which offers rust resistance. Dimensions are 225mm x 2.5mm. Includes 12 stainless steel screws. [Easy Installation and Lawn Protection] Simply insert the nail into the center of the wheel and secure with the included screw. High-quality spikes help maintain a clean, healthy lawn. Prevents lawn damage from your Landroid lawn mower robot. [High Compatibility] Wheel size is 225mm; pegs are compatible with all L models of Landroid lawn mower robots. Specifications: TLWL-02 Material: Stainless steel Color: Silver Package Contents: 2 x traction wheel, 12 x nails, 1 x English manual. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement allowance is +/- 1-3cm.