Mower Blades Replacement Electric Groin Hair Trimmer Blade Snap In, Pack Of 45 Good Performance: Double-edged sharp lawn robot blades provide you with more efficient cutting performance, greatly improving your productivity. High Efficiency: Sharper blades can cut more lawn area, which means it reduces the frequency of blade replacement and improves machine efficiency. 45 Blades: The kit contains 45 lawn robot blades to meet your long-term blade replacement needs. Material: The blades are made of stainless steel, which is , super toughness and high strength, ensuring a long service life. Hard Blades: The lawn robot blades are harder, with a smoother surface and better insulation.