5 Foot, Dual Strap, Locking Carabiner Tree Swing Hanging Kit NO TOOLS Needed. Just wrap the strap around the branch, slip one end through the other and attach the Carabiner LOCKING Carabiner to ensure the swing is safe and secure. Never be afraid of the swing coming unhooked again HEAVY DUTY! These straps will hold Over 1500 Lbs STRONG 100% Polyester strap made from the same material of your car's seatbelt TREE FRIENDLY - These straps are designed to protect the tree. They will not dig into the tree like ropes or chains do