I saved an old set of box end bicycle wrenches from long ago. They work great and have every smaller size. I just grab a few from my set and try one till it fits.
TFTC have been replaced with Philips screws but 3/16 for RBION trough physical switches.
This would more than cover it
This is probably more like it
http://www.harborfreight.com/piece-high-visibility-14-in-drive-sae-socket-set-67906.html
Or just a basic cheap kit
http://www.harborfreight.com/130-piece-tool-kit-with-case-69331.html