This knife section is the cutting element mounted on the header bar of a forage harvester or combine. It is secured through three mounting holes and mates with the opposing shear bar to sever crop material as the header rotates. The section is produced by Rasspe, the original-equipment supplier for this geometry, so the hole spacing and profile match the header's mounting pattern without modification. A dull or chipped knife section increases the force required to cut, leading to ragged stubble and higher fuel consumption. When replacing, inspect the shear-bar edge and replace any worn sections in the same set to maintain uniform cutting height.