A-KXE10217-AI Fitting Kit, Knife Head Plus HardwareOne New Aftermarket Replacement Sickle Knife Head Fitting Kit for John Deere Cutting Platforms This sickle knife head fitting kit (also known as a knifehead or sickle drive head) is part of the sickle bar cutting assembly on John Deere grain and cutting platform headers. It mounts at the drive end of the sickle bar and includes the knife head plus all required hardware. Kondex manufactured aftermarket replacement for John Deere OEM part KXE10217.