This is one of the finest precision seeders available. The unit comes with a 0.26 gallon clear hopper which is very easy to empty and has a quick release that facilitates changing of rollers. It singulates and spaces small seeds accurately, which will help save you seed and time. The JP-1 works best for small seeds and with only a small amount of seed in the hopper. With 20 different size rollers available, you can accurately seed a large variety of crops.