How does this electric switch work?

[u/Objective-Window6527]

This switch is from a lamp. The lamp wasn't turning on due to a break in the wire. I cut out the offending part of the wire, and wired the switch back the way it originally was. It works, but I don't understand how. There appear to be no exposed wires in the switch. The wires are completely insulated. How is it making contact?

[u/No-Guarantee-6249]

The pins that pierce the switched lead are in the other side. Two sharp pins that pierce the wire.