Aluminum. For dead-ending self-supporting drop wire. Attach directly to bare neutral and anchor to home. Hot wires are braided around the neutral and dropped to service head. Saves conductor since drop wires may be cut to exact lengths. Can be attached to bare neutral at any point in the span. There is a maximum of 2 and a minimum of 6 ASCR and AAAC wire range. There is a 1 Str. maximum, and a 6 Sol. minimum aluminum wire range.