Part Description:High-quality grindstone designed for use in New Holland forage harvesters. This component is part of the automatic knife sharpening system, ensuring the chopper drum blades maintain optimal sharpness for efficient cutting performance. Compatible with: FR450 A3, FR450 A4, FR480 A4, FR500 A3, FR500 A4, FR550 A4, FR600 A3, FR650 A4, FR700 A3, FR780 A4, FR850 A2, FR850 A2 - Tier 2 (NA), FR9040, FR9050, FR9060, FR9080, FR9090, FR920 A4B
