The present disclosure relates to a combination of a support device (1, 33) and a holding device (7), the support device comprising an attachment surface having rows (5) with elongated slot openings (3, 3′), and the holding device comprising an attachment part (9) and a carrier part (11). The attachment part is intended to be attached to the support device by being partly inserted into a first slot (3), such that the holding device can take up a load directed in the plane of attachment surface, and the carrier part (11) being capable of supporting an item to be stored. A stem part (13) interconnects the attachment part and the carrier part and the stem part includes a fin (15) that fits into a second slot (3′) which is located under said first slot (3). This provides a more reliable connection to the support device. A holding device suitable for this combination is also considered.