These are fittings for attaching CRATE, DENTON, etc. to a front carrier. The screws are not exposed inside the basket, so they won't damage your luggage. Includes 3 mounting fittings. I bought these to attach a BASIL carrier, but I realized after purchasing them that they couldn't be mounted on my bicycle, so I haven't used them and have been storing them. Therefore, they are unused. I don't have the case or packaging anymore. Please refrain from purchasing if you are sensitive to used items.