This stationary knife is mounted on the straw chopper drum of a forage harvester. It shears crop material against the counter-knife assembly as the drum rotates, reducing the straw length for even field distribution. The knife is held in place by bolts through its mounting holes; the flat profile and consistent thickness maintain the cutting gap with the counter-knife. A worn or chipped cutting edge increases the shear gap, producing longer straw fragments and raising the power draw on the chopper drive. The manufacturer machines the knife to match the original mounting geometry so it aligns with the existing bolt pattern and counter-knife position without shimming.