The Value Tie-Off Straps simple design installs easily, insert one end of the strap though the other, nail it to the structure, attach your connecting hardware and it's ready to use. When your project is complete you have the choice to take it with you or cut it off. The Value Tie-Off Strap can be wrapped around wood or metal framing members that are secure and able to withstand the intended load such as trusses, rafters, floor joist, and exterior wall headers (sharp edges, fasteners and truss hanging hardware need to be avoided) These fall protection anchors are designed to constrict around the anchorage point and will tighten when subjected to a fall. Each strap comes with an instruction/specification manual complete with installation pictures.