Compatibility: Compatible with eufy Robot Lawn Mower E15. Contains: One blade disc and three screws. Excellent Cutting Performance: Enhance the efficiency of your robot lawn mower with better cutting patterns and exceptional smoothness. Recommended Usage: Replace every 2 years for optimal performance. Easy to Install: Remove the old screws, screw in the new blade disc shield, then attach the blades. Use Official Accessories: Authentic eufy accessories extend the lifespan of your robot lawn mower and come with official after-sales support.