Fancy a ferret on my behalf?

[snowy]

Had to go there - but nothing to do with the furry variety!
http://i781.photobucket.com/albums/yy100/Szamanxd/100_5179.jpg
The request is to have a ferret in your drawers for me, or in your chest (of tools! ) if that's more applicable!
After going into the "twilight" zone by getting the F700 GS as a second steed / commuter, trying to knock up a tool kit as what I call "essentail" ones ain't included!
Last bit to find is a 24mm ring spanner, one that slides into the extension handle that's always available, this sort of thing but in 24mm guise.........

Not even sure if 24mm ones exist, but would be really usefull for rear axle as it's got one of them there oily / linky things that require attention!
If anyone has one that may be surplus or requires a good home, please let me know, how much you want for it and P&P and I'll re-imburse as required.
Thanks in anticipation.