Olympus OM mount body cap set of two. (Please note that these are not Micro Four Thirds mount caps.) These are compatible products. When a lens is attached to the camera body, the caps must be stored separately. And they are easily forgotten and lost. Genuine caps are expensive, and it's a shock when you lose them. If you use these reasonably priced caps from the start, the shock will be less if you lose them. It's recommended to use these from the beginning instead of using genuine products regularly. Also, caps may not be included when you buy used lenses or used camera bodies. These can be used in such cases. Olympus OM OM Rear lens cap Rear cap