The double ball catch is comprised of a latch and a striker made of molded black fiberglass-reinforced nylon. The latch includes two stainless steel spring-loaded balls that are corrosion-resistant. The suggested hardware to attach the hinge to a T-Slot 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/.