The LEGO set 7504 is not a recognized official LEGO set number as of my last update in 2023. Therefore, I cannot provide a detailed description of it. Its possible you might have the set number incorrect or it may refer to a specific piece or part from a set. LEGO numbers are unique to each set and typically describe everything from small individual vehicle or character sets to large, intricate builds featuring hundreds or thousands of pieces. These sets can be based on original LEGO themes like City, Technic, and Creator, or licensed themes from popular movies, TV shows, and comic books such as Star Wars, Harry Potter, Marvel, and DC Comics. For accurate information or to find a specific set, I recommend checking the official LEGO website or a comprehensive LEGO database. If you have any other sets in mind or need information on LEGO themes or building tips, feel free to ask!
