This hardware is used to connect modular upholstered furniture to form seating rows or groups. The hardware is easily connected to the bottom of the upholstered pieces and connects to the corresponding angle bracket. When not in use the device can be pivoted out of the way. The catch fork is turned and the upholstered pieces are pushed together. The connection is released by lifting. The Compact Sectional Sofa Connector is used on Sectionals that have a thin frame base and the bottom is recessed. This piece is designed to mount to the bottom of your sofa on the edge of the wooden frame so it can stick out.