Orders of 2 or more will receive a free gift.1. EASY TO REPL Blades is double sided, they are very easy to install and change with screws, you can go bawards 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 excnt 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 ened and therefore cut more precisely than ever before ^ 4. High quality & durable Replment blades for robotic lawnmowers are finely polished, extremely thin and - 0.75 mm thi, 3 g. These blades do not need to be changed frequently. They do not rust, break and stay for a long time. The enclosed screws are also rustproof.^ 5. High security Robotic lawnmower replment 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 ldren