This is a convenient belt that allows you to load a surfboard inside your car using the assist grips. New ones are sold for over 5000 yen on online shopping sites. It has buckles for easy attachment and removal, so you can take it off when not in use. The belt part that contacts the board has cushioning to prevent damage to the board. It can be installed in cars that have assist grips on both sides near the ceiling. Contents: 2 rack belts, 2 securing belts. I bought it for a surf trip and used it once or twice, but it's been sitting in my closet, so I'm giving it away to someone who will use it.