Husqvarna AM Enhance HSS Blades - High speed steel blades with softer core and hardened edges - pack of 45Husqvarna Automower Enhance HSS blades, high speed steel blades with softer core and hardened edges for sharpness and robustness. Choice of HSS material provides harder edges that provide greater durability and clean cut grass for a healthy lawn. The design with two cutting edges is recommended when cutting systematically or in applications where the skid plate is removed. Safety blade according to standards.