Joachim Manz designed the Trabant pendant lamp for German lighting manufacturer Tecnolumen . The lamps are concrete balls that hang on a thin wire, and on one end of the concrete ball is a glass lens (either matte or clear) that maintains the same curve as the rest of the ball. The lamps come in two versions, Trabant 1 has a thin lane in the concrete that allows rotating and tilting the lamp, while Trabant 2 does not.