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 healthy2. 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 before4.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)Delivery quantity: 30set, (30 pieces + 30 screws)Size: 35*18*0.75MMColor: goldenKind tips1. Package content: only the above package content, excluding other products.2. The size is measured manually, please allow 1-2 cm measurement error.3. Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.