This is a used carrier removed from a Panasonic BP02, so it has scratches, rust, and dirt. The original BP02 carrier is not class 27, so a child seat cannot be attached (as stated on the carrier itself). It may be possible to use it on other bicycles if the dimensions match, but I cannot answer questions about compatibility to avoid any issues, so please purchase it if you can understand from the photos. There are no screws or accessories other than those shown in the photos. The stays will be removed and disassembled, wrapped in bubble wrap, and shipped in simple packaging. Please refrain from purchasing if you are particular about the packaging.