A pair of tool tethers for heavy tools and instruments attachment to a fixed structure rather than to a person. The TL1-3025 Fixed Loop and TL1-4025 Fixed Loop Tethers are rated at 15 and 25 lb to keep drills, power drivers, electronic meters, and other heavy tools and instruments safely tethered to avoid injury to workers or the work site. The “fixed loop” attachment also permits tethering tools that have no other attachment point. For example, when a larger loop is required to go around a large handle, such as on a chain saw, the worker would just slip knot the “fixed loop” over the handle. A dropped 10-lb tool can have a shock load exceeding 200 lb.