I use these rods to put D&B Max 15 on top of EAW LA 118 18'' Subs. These Max 15 are fairly heavy. But with these it's easy. The winch helps you decide about the height of the top after it's been put on the rod. No need for a helping hand. By counting the holes on the inner tube you can put both tops on the exact same height. Sturdy steel construction and good ballance on stable, horizontal ground, even when the rod is at its maximum length.