Versatile features, high-quality components and operator friendly! The Unverferth Pro-Force dry fertilizer spreader, compost spreader, poultry litter spreader and cover crop seed spreader features operator-friendly innovations, top-of-the-line performance, heavy-duty components and can spread up to four products at the same time with variable rate. These features make the Pro-Force dry granular spreader the ideal match for commercial applicators, professional producers and growers of all sizes.