I grabbed one from harbor freight.

http://www.harborfreight.com/9-piece-38-and-12-drive-metric-hex-bit-socket-set-67880-html.html

and there's this:

http://www.vanagonauts.com/Changing-gearbox-oil101.htm

Have fun,

Jimmy
Wilmington, NC

On Wed, Jan 15, 2014 at 8:28 AM, David Bjorkman <ddbjorkman@verizon.net>wrote:

> Hi All;
> I went to check my tranny fluid level yesterday and could not find my cut
> off 17mm allen wrench.  So I'm thinkin' maybe I'll upgrade to an allen
> socket or something.  Right.  So I'm off to Home Depot, Gem Auto, Sears,
> Advance Auto, ... and no one has a 17mm allen socket, or even a 17mm allen
> wrench.  Then Harbor Freight comes to mind, but I also remembered someone
> mentioned a tool (I think at HF) specific to removing that big allen bolt.
> That would be an upgrade indeed.
> So, can anyone out there fill me in on the tool that does the job before I
> tear the workshop apart or go to HF?
>
> Dave B.
>