Butt connectors are electrical connectors used to join two wires together. They are typically cylindrical and made of metal, allowing for a secure and conductive connection. To use a butt connector, the ends of the wires are stripped and inserted into either end of the connector, which is then crimped to hold the wires in place. These connectors are commonly used in various applications, including automotive wiring and home electrical projects. They provide a reliable way to extend or repair electrical circuits without soldering. Proper use of butt connectors ensures a strong connection that can withstand vibrations and environmental factors.