JacobsParts Waterproof DC Power Pigtail Connectors Male Female Pair for LED Strip Light, CCTV Security Camera, DVR, and other Low Voltage Applications Add waterproof low voltage connectors to your device or proejct. These pairs of male and female pigtails have 5.5x2.1mm connectors and black PVC covering the wires. The ends are pre-stripped and tinned and are ready to be soldered, connected with terminals, or connected with wire nuts. To make waterproof connections, we recommend soldering on the pigtails and covering the connection with heat shrink tubing. Connectors: 5.5x2.1mm Male & Female Waterproof, bare wires Length: 8.75-Inches / 22cm per wire (17.5-Inches / 44cm for the combined pair) Polarity: Center positive, Red (+) / Black (-) 20 AWG Wire