I've bought a part in the past and certainly they're still around but don't know what the hell to call it -- got them from digi key (called them already).
Ok -- it looks like flat ribbon cable -- but SOLID, not stranded and there are tinned leads on BOTH sides of the cable. I call them jumpers and they're avaliable (or were) in a variety of conductors and lengths. Everybody carried them.
They're used to interconnect PCBS (through hole solder) or even headers possibly because they're .100 on center.
Don't know what to call them and spent an hour on the DK and Mouser sites -- any help? --thanks
Mine were also black with a polarization stripe -- like I say 2 to 20 conductors and you could get a 2" long if you wanted it.