Source for high count stranded wire

Using Arduino General Electronics
1

I use mostly 7 strand, tinned wire for circuit hook up. (~ .006"/strand 35AWG)
Now and then I use 18 strand tinned wire where flex is needed. (~ .004"/strand 38AWG)
I have used old mouse and keyboard cables as a source for the 18 count but this is harder to find.
Has anyone a link to a supplier for 18+ strand tinned wire that you have used?
Something like a 20+ multi conductor/color cable.

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2

This stuff has 65 strands: http://www.bulkwire.com/wire-cable/test-lead-wire.html

3

Now that would be break resistant!

Thank You