Quick connector wire sets make wiring up our arcade-style or metal buttons quicky-quick. Each wire comes as a 'pair' with two 0.25" quick-connects pre-crimped. The wires are terminated together in a JST 2.5mm 2-pin connector. This connector will fit in 0.1" headers, so it's breadboard compatible or you can stick two wires into the end. Of course, you can chop this off if there's no use for it.
If you need a connector for the other side, try this JST XH (matching part from Digi-Key here)
We've found these work best with our:
But they are not compatible with our smaller LED and mini arcade and buttons. For those, you'll want either the 0.11" Quick-Connect Wire pairs or the 0.187" Quick-Connect Wire pairs.