This is a set of Erector pipes and joints. This set allows you to create overhead storage in the rear seats of a kei car (light car). Set Contents: 　Erector Pipe 90cm x 2 　Erector Pipe 60cm x 2 　Erector Joint J-118A x 4 　Erector Joint J-102B x 4 　Turn Nut TN-6 M6 x 4 Example Usage (Overhead storage in the rear seats of a kei car): 　You can pass 2 J-102B joints through the 60cm Erector pipes and attach them to the holes where the assist grips of the rear seats were removed using turn nuts. (Photos 6 and 7) 　You can connect both sides with 90cm Erector pipes and J-118A joints. (Assembled state in photo 2) 　This was actually used in a Suzuki Spacia. 　You can create a shelf with cable ties and wire mesh (sold separately). 　It is possible to return to the original state after installation. 　For more details, there are helpful videos online. Thank you for viewing.