I have my own so don't need this service but I applaud albrt for making it available and thinking thru the system to make it useful to the maximum number of conscientious hobbyists.
The Stein tool is robust and high quality, which is better than my own which is OEM Stronglight.
If people show both the proper respect I believe this tool and tool loan program can last for decades...Kudos!
(Hint: apply grease to the threads and wipe them "clean" when done)