The 3 way - light squared corner connector is a die-cast external fastening method that is typically used to create a squared corner connection between three profiles. The fastener is lightweight and has three access holes; it includes the cover caps for the holes, to provide a finished look. The 3 way - light squared corner connector requires an end tap machining service on the mating profiles. The suggested hardware 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/.