This knife is the cutting element for a disc mower, mounted on the rotating disc carrier to sever crop material. It interacts directly with the crop and the mower's cutting disc; the knife's edge impacts the standing crop, and the disc's rotation provides the cutting velocity. Wear on the cutting edge reduces cutting efficiency and increases power draw, while a damaged knife can cause uneven stubble and increased fuel consumption. The manufacturer machines this knife to the original geometry so it seats correctly in the disc's mounting slot and maintains the proper shear angle. On installation, ensure the knife is secured with the correct fastener and torque.