Need to extend your track lighting or add a power feed? This Nora I-Connector (part number NT-312W) is what you're looking for. It's a simple but essential little piece that connects two sections of single-circuit track lighting together, and it also carries the electrical current between them. It's made to be compatible with Halo brand track systems (and others that use the same style). The finish is white, so it blends right in. It also has a knockout on it, which means you can use it as a power feed point – where you hook up the wires from your ceiling junction box to actually power the whole track. Dimensions are about 4.08 inches wide, 1.44 inches long, and 0.7 inches high. An electrician's staple for a clean, professional-looking track lighting installation. Just make sure your existing track is the single-circuit type (not two-circuit or three-circuit) before you buy.