Hi John,
It arrived today and is an excellent tool. Here
is a photo and a comment for your website.
How did I manage for so long without this tool for tightening screw plugs on old British motorcycles? The picture shows it in use on the chaincase oil filler plug of my 1962 Triumph Tiger 100SS, and it works just as easily on the gearbox filler plug. Well designed and strongly made.
Martin