The cable tie mounting block is used to organize cables, wires, and tubes. It is a reusable option allows cable ties to be attached in two directions. The pad key allows it to easily drop into a T-slot channel even when ends are closed off. The cable tie mounting block twists into the T-slot to lock in place.
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/.