Y Adaptors

[F]

I have one more question about the Tamiya adaptors, which are used on RC batteries. For those who don't know, the ends of the RC chargers are males, and the ends on the RC batteries are females. Does anybody know where I can find an adapter that has 2 males on one end and 1 female on the other? It should look something like this little 5 second picture that I drew:
http://photobucket.com/albums/v406/fran ... tamiya.jpg
And if nobody knows of an adaptor like that, an adaptor with 2 males on one side and 1 male on the other would work OK too, even if it would require a bit more work on my part.