Here is a Video on how to install
Tree Swing Hanging Kit Between 2 Trees works for where you don't have limbs on trees to hang a Tree Swing, you can hang any type of Tree Swing or a Porch Swing from this Tree Swing Hanging Kit, With tree distance minimum of 8' or 16' maximum apart or less.
It is made with 2 inch wide Polyester Webbing that has a breaking strength of 1000 lbs. Tree Swing Hanging Straps webbing has loops sewn in each end for easy installation. The The Tree Swing Hanging Kit hardware is 1/2 screw lock couplings.
Exactly what is advertised. Setup was a breeze (much better and cheaper than using traditional methods with tree house bolts). Contacted seller several times with questions and got quick responses. I was able to hang a two person swing using this kit.
-- David Stumpf