Pack containing a total of 30 original replacement blades compatible with all WORX LANDROID robot mowers For WORX Landroid connected robot mowers to deliver optimal results, the blades must be changed regularly. Robot mower blades are sharp on both edges and swirl to ensure a perfect cut in both directions. High-quality blade machining limits untimely blade changes and increases durability and your comfort. A kit of 30 blades represents an average lifespan of 2 years. Easy to use, turn off your Landroid robot mower, remember to wear protective gloves, replace all blades and always use new screws to secure the blade and balance the turntable before reactivating your mower.