Upgrade your electronic projects with this 6-pack of DC-022D 5.5 x 2.1mm female DC power jack connectors. These threaded panel mount barrel adapters provide a secure connection for your power supply needs. Each connector features durable construction with red and black wires for proper polarity identification. The waterproof cover caps ensure protection against moisture and dust, making them ideal for both indoor and outdoor applications. This comprehensive set includes six barrel connectors with matching mounting hardware - metal hex nuts for secure installation and protective rubber caps to maintain waterproof integrity when not in use. Perfect for DIY electronics, automotive projects, security systems, or any application requiring reliable DC power connections. Easy to install and built to last, these connectors deliver consistent performance in various environmental conditions.