Mid-Size Stainless Steel SS SpreadersMillcreeks Mid Size Stainless Steel Manure Spreaders are meant to handle manure for up to 20 horses as well as for spreading other materials, like hay, straw and manure from other animals. There are 2 models in this category. Our Model 57 has a heaped capacity of 56 cubic feet, or 45 bushels, while our Model 77 has a heaped capacity of 72 cubic feet or 58 bushels. Both spreader models are available in either Ground or PTO designs. Stainless steel, mid