Skeleton trailers are also known as gooseneck trailers. They are semi-trailers with a unique U-shaped frame that allows the trailer to pivot and swivel， making it easier to maneuver in tight spaces. The skeleton trailer is often used for transporting large， bulky items such as construction materials， agricultural equipment， and even RVs. Its versatility and ability to handle heavy loads make it a popular choice for many types of businesses and industries.