The H-7A is a black metal single joint used to assemble the HJ-7A joint set. This piece makes it possible to connect two pipes perpendicularly, one above the other, to create an open intersection. It can also be used to strengthen structures.
A Flexpipe Product
For technical details and images, please search for the product using the 80/20 interactive catalogue found here: https://catalogs.8020.net/80-20-Catalog-26/C/.