A Smart Addition for Ongoing Care: Blades are wear parts—adding official replacements makes routine maintenance simple and worry-free. Includes: eufy Robot Lawn Mower E18, eufy Replacement Blade Set (3 × 9 Blades and 9 Screws). Robot Lawn Mower E18： Wire‑Free Mowing: Pure vision FSD technology with high‑precision cameras and AI enables accurate mapping and obstacle avoidance via Wi‑Fi or 4G, with no boundary wires or RTK station required. Hands‑Free Auto‑Mapping: Precisely maps your garden and optimises mowing paths for efficient, customised lawn care via the eufy app. Accurate Obstacle Avoidance: Cutting-edge 3D perception system accurately detects obstacles, avoiding collisions in even the most complex of gardens. Blade Set： Sharp, Reliable Cutting: Made of high‑carbon steel for smooth and efficient performance. Complete Replacement Set: Includes 3 × (9 blades + 9 screws) for easy maintenance. Official eufy Accessory: Compatible with eufy Robot Lawn Mower E18; recommended replacement every 240 hours. Note: Wear gloves when changing the blades.