Hex (six-sided) metric (mm) sockets in a plastic box.
4 - 19 mm except 5mm and 18mm missing
The Southeast Seattle Tool Library
http://setools.org/
4425 MLK Jr. Way S #100http://setools.org/
In a garage behind the building at the SW corner of MLK and Genesee
Seattle, WA, 98108
USA
202 780 7296