Trimmer Mowers are designed so the user can walk behind, not carry their brush cutter.  There’s always going to be grass, untidy areas or hard to reach places on your property that can’t be reached by ride on mowers, are too steep or just too tall to be cut conventionally.  Trimmer Mowers take the strain and aggressive movements associated with swinging a hand held brush cutter away.  They are designed to be well balanced, on high stability wide diameter wheels.  Also their powerful 5.5HP engines are more powerful than standard smaller hand held units meaning you can cut more grass, taller grass and thicker grass faster and easier.