The NLG Spanner Tethering Kit is an effective, simple and very useable method for tethering a spanner (or similar parallel-sided shaped tools). The NLG Tether Ring allows free movement of the lanyard up and down the length of the tool with minimal restriction to its use.
This tool tethering kit includes:
NLG Tether Ring™, Medium (101273)
NLG Extended Bungee Tool Lanyard (101434)