SMOOTH CUTTING - Ultra-sharp replacement blades for automatic lawn mowers ensure consistent and precise cutting. Easy to replace, just a screwdriver is required. Durable: The robot mower blade is made of high-quality stainless steel, which has excellent rust resistance, wear resistance, good stability, and other characteristics. It has a long service life. Safety: Thanks to its sturdy stainless steel, the robot mower blade is impact-resistant and safe to use. You don't have to No need to worry about the blade flying off and hurting you. Titanium: The blades of the robot lawn mower are cold gold plated, which gives them a longer service life and better wear resistance. The blade of the robot lawn mower has higher hardness, a smoother surface, better scratch resistance and better insulation, giving you an optimal experience. The package contains 30 blades and 30 screws, enough quantity to meet your daily needs.