Dual Floppy Drive Cable
Here's a second one where the two drive connectors are the other way round.
I'm told this type of cable is handy for people extending their disc drivery by adding a "Gotek" to their existing setup with a 5¼" floppy drive, as the Gotek takes the same connector as a 3½" disc drive. I can't confirm, though, as I don't have anything so modern.
