1. EASY TO REPLACE Blades is double sided, they are very easy to install and change with screws, you can go backwards while one side is boring. Keep your lawn clean, green, and healthy^2. High quality material Made of high quality stainless steel with a titanium coating. Titanium coating ensures excellent rust resistance, good wear resistance and durability.^3. Most precise cutting results You can look forward to a unique and consistently smooth cut: Our knives are extra hardened, specially sharpened and therefore cut more precisely than ever before!^4. High quality & durable Replacement blades for robotic lawnmowers are finely polished, extremely thin and sharp - 0.75 mm thick, 3 g. These blades do not need to be changed frequently. They do not rust, break and stay sharp for a long time. The enclosed screws are also rustproof.^5. High security Robotic lawnmower replacement blades Thanks to the high quality material, these blades are harder to break. Even if the blade encounters resistance (stones or similar) - ideal for the safety of animals and children! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin