Headless 19-32-5 Hipshot headless system Nordstrand big singles and active system with neck selector switch. The body is made of Swamp Ash and Mahogany. The necks are also made of the same ultralight 1/4 sawn Mahogany. The fret/fingerboards are extra thick Macassar Ebony. The top is figured Redwood. The bass weighs only 11.75lbs.