This high-quality aftermarket replacement grindstone, complete with four robust mounting rings, is specifically designed for New Holland FX series forage harvesters. As a non-original equipment manufacturer (non-OEM) alternative to part number 84056378, it provides a reliable and cost-effective solution for maintaining the sharpening system of your agricultural machinery. The grindstone features precise dimensions of Ø76x150mm, ensuring an accurate fit and efficient operation for sharpening the blades within the forage harvester. Each set includes the durable grindstone and four essential mounting rings, facilitating a secure and straightforward installation process. Ideal for agricultural professionals and farmers, this replacement part helps ensure the continued sharpness of your forage harvester's cutting elements, which is crucial for achieving clean cuts, reducing wear on other components, and improving overall machine efficiency. Engineered to withstand the demanding conditions of agricultural use, this grindstone offers a dependable sharpening component to keep your New Holland equipment performing at its best.