Abstract: Proposed for detachably securing formwork panels, formwork boards, insulation and facade panels, breastwork bars, scaffolding brackets, etc., is a holding device designed to be embedded and fixed in place in a concrete structure of a building. This holding device has one or more sockets, at least one socket having threaded or otherwise contoured walls, in which matching parts of the securing, supporting and/or clamping elements mentioned can be detachably inserted. This holding device is a substantially L-shaped anchorable support member made of a polymeric material, having one or more sockets in which matching parts of the securing, supporting and/or clamping elements mentioned can be detachably inserted.