Review on Secure Your Swing With Safe And Easy Tree Swing Hanging Kit - 2000 Lb Breaking Strength And Quick 10Ft Long Strap Installation by Chris Walker

This product seems simple enough, but in order to maintain tension on the branch the D rings need to be tight to the branch. This is great if you are anchoring to a level piece of steel, but a tree branch is not level, so you'll need to level your swing below where the straps hang. It is an inexact science and it doesn't take too many degrees of difference to have your swing tilt and turn. So if you are installing, get the straps tight to the branch and don't worry about getting the carabiners level. Save the leveling for mounting the swing.If you don't have 2-strap swing none of this matters.