All of our standard Dueling Trees are built on the same design. We use a 3" steel angle iron frame that telescopically slots into a tube steel base. When assembled the post leans forward at approx 20 degrees to aid in preventing the target plates from being trapped in the real position. Target plates are bolted to a steel hinge assembly we weld between 3/4" solid round bar and a 3/8" steel plate. This allows for eeasier swingg action and reduced chance of hinge failure.