The 90 degree left hand pivot bracket plate is commonly used to add motion to certain elements of your project. The plate provides a full 90 degrees of axial motion and has a permanently lubricated bronze bushings that act as a high-strength pivot point. The suggested hardware to mount the plate to a profile can be found on the "Suggested Hardware" tab.
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/.