First I mounted the windmill on some regular wheels that weighed more than twice the weight of the mill. The mounting bolts were bent and the entire construction could tip over. These wheels cost more each than the casters I had at the mill, but they were worth every penny. Not only are they more than strong enough, but they snap properly thanks to the large base (the hex at the top of the assembly in the photo). You can also level the grinder. The stand that comes with the mill appears to be homemade, and one leg is about 1/8 inch shorter than the rest. With the legs extended, the mill stands on all four legs with ease. I would buy them. again.