Replacements Blade for One Set of Mower Cutter W1377115054* Every Brush Mower need 2 sets of this Blade. * one set of this Blade include blade*1, bolt*1, nut*1, flat washer*2, bush*1. The blades are typically flat or slightly curved, designed to maximize cutting efficiency. The blades are usually made from high strength alloy steel or hardened steel, ensuring excellent wear resistance and impact durability, allowing them to stay sharp and effective even when cutting through tough vegetation or branches.