Where to find 24 Gauge 2-Pin Connectors?

[Enigma]

Hubby wants some of the 2-pin connectors that Modular LED and Rapid LED use for their solderless LED kits for the new Z-Scale model train set that he's starting.

I'm sure I could find them on ebay, direct from China, for pennies a piece. I can't figure out what the things are called, and hubby had never seen these connectors before they showed up with the LED kit from Martin.

Any ideas as to where I could get some of these, or what they're technically called?