Increase the load capacity and stability of your Tree Fort TAB. The Tree Fort Strut Back Up is an adjustable strut designed to help keep a Tree Fort TAB level under heavier loads. It’s the ideal solution when a Cable Back Up isn’t possible due to overhead obstacles or when a cable could create a tripping hazard across the deck.Important: One end of the strut is left-hand threaded. Use caution when inserting the eye rod ends.What's included: (2) Strut ends (2) 5/8" eye rod ends (1) Strut turnbuckle (1) 5/8" jam nut (2) 5/8" x 2" hex bolts (2) 5/8" lock nuts (1) 1" x 8" lag screw Note: Does not include the Tree Fort TAB pictured.For best practices and safety, we strongly recommend backing up every Tree Fort TAB with either a Cable Back Up or a Strut Back Up.Installation instructions: After purchase, installation instructions are provided (check the order note in your confirmation email).Tree Fort Strut Back Up Installation Video:Watch the full Tree Fort Hardware Video Series to learn how to build a small treehouse platform.