The 4-hole horizontal adjustable hinge is die cast zinc with a black powder coat. It is commonly used to connect T-slot profiles. As the name implies, the horizontal hinge has horizontally slotted holes. The slotted holes support fastening adjustments.
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/.