Increase strength and stability for your Tree Fort Attachment Bolt (TAB). The Tree Fort Cable Back Up increases the overall load capacity of a Tree Fort TAB and help keep the TAB level under heavier loading. It’s the ideal choice when there are no overhead obstacles preventing installation—giving you a straightforward way to confidently move forward with your treehouse platform build.Included in this kit: Custom Hook Nut 4 ft galvanized steel cable 3/4 in x 5 in lag screw We strongly recommend backing up every Tree Fort TAB with either a Cable Back Up or a Strut Back Up for best results and added support.Please note: Tree Fort TAB sold separately.Installation instructions: After your purchase is complete, you will be provided with installation instructions. Please see the order note in your confirmation email to access these.Tree Fort Cable Backup Installation Video:CLICK HERE to watch the full Tree Fort Hardware Video Series on how to build a small treehouse platform.