The Husqvarna 599805202 HSS Endurance Knife 45S is an original equipment manufacturer (OEM) replacement blade designed for Husqvarna Automower robotic lawnmowers. Crafted from high-speed steel (HSS), these blades offer superior durability and a longer lifespan compared to standard blades, providing a consistently sharp edge for a clean cut. Each package typically contains 60 blades, ensuring a long-lasting supply for routine maintenance. This genuine Husqvarna part guarantees optimal fit and performance, maintaining the efficiency and cutting quality of your Automower.