Profile: Green Line, Inc.,designs, manufactures and markets a heavy-duty line of equipment for use in agriculture, construction and land clearing.We offer a wide range of heavy-duty tillage equipment for professional farming or commercial use. Our Big G brand manufactures both offset and double offset disc harrows, including the giant 60' 5000 Series. For commercial or extreme agricultural service, the Big G 1700 SD and 1000 SD offset discs provide unmatched performance with blade diameters up to 42".