1Enhanced Compatibility: Specifically designed for robotic lawn mowers with wheel sizes of 212mm. Compatible with model for 250 Smart, 500 Smart, 300, 400, 500 Smart+, 600, and Life 1000. 2Delicate Craftsmanship: Crafted from cold plate and electroplated surface treatment, our spikes boast exceptional durability, heat resistance, heat reflection, excellent welding properties, and high accuracy, ensuring long lasting quality. 3Easy Installation: Simply place the spikes at the center of the wheel and secure them with the included screws. The spikes guarantee a beautifully manicured lawn. No more unsightly holes in your lawn. 4Improved Traction: When the lawn is wet or features varying heights and depths, our spikes provide better traction for the robotic mower, eliminating the need to dig up the lawn. Prevent your lawn robot from getting stuck on uneven terrain with our traction wheels. 5Ideal Replacement: Wonderful replacement for the old and damaged parts, fine workmanship, attention to details, helps you improve the working efficiency! Item Type: Robotic Lawnmower Spikes Material: Cold Plate, Surface Electroplating Application: forRobotic LawnMowers for250 Smart, 500 Smart, 300, 400, 500 Smart+, 600, Life 1000 2 xRoboticLawnmowerSpikes 14 x Hex Countersunk Screws 1 x Manual