Large, rugged pneumatic tires make the Earthway estate 80-pound walk-behind broadcast spreader remarkably easy to use -- no matter what the terrain. Measuring ten inches in diameter, the tires' deep tread and high flotation tackle even rough, uneven patches of lawn with ease. The spreader's sturdy, tubular, steel frame has a large-capacity plastic hopper that holds up to 80 pounds of fertilizer. It features a patented "Ev-N-Spred" 3-hole drop system to ensure even fertilization A commercial-quality gearbox with durable, enclosed gears has a handle-mounted controller that easily adjusts for varying rates of distribution. This spreader is compatible with all types of granular lawn fertilizers. Simple assembly is required.