Abstract: The invention relates to a modular column display system specially suitable for thin objects used to exhibit goods or pamphlets, and to adapter elements and angular adapters for merchandise boxes. The invention discloses a display system with multiple individual adjustment possibilities and whose modules are easy and economical to produce. To this end, the invention provides an adapter element (4) for a column display system (1) and angular adapters for merchandise boxes (7). The angular adapters for merchandise boxes (7) used in display systems comprise a stand segment (18) engaging in an adapter element (4) or in a supporting structure and a supporting segment (19) to fix a merchandise box, wherein the stand segment (18) has a rigidly configured hook-shaped retaining clamp (20) and at least one flexibly configured locking clamp (11).