Typically you see five types of brush cutter blades: * Chisel blade * Knife blade * Mulching blade * Smasher blade * Brush Destructor For cutting soft materials, a knife blade is perfect. On the other hand, a chisel blade is suitable for cutting hard materials. A smasher blade is suitable for watery weeds and grass. The mulching blade is ideal for mulching leaves and branches. A brush destructor blade is the most versatile one that can perform the task of all the above-mentioned types of blades.