The CRL Single-Sided Connector with Tensioner is designed for a maximum glass thickness of 3/8" (10 mm), and is used in single shelf or panel installations. The Connector can be rotated to any position to accommodate vertical panels and signage or "tilted" displays. Simply depress the top of the Tensioner to adjust the shelf to the desired position; the internal locking mechanism will hold it in place. Each Single-Sided Connector has a maximum weight capacity of 20 lbs. (9 kg). The package contains one Single-Sided Shelf Connector and one Cable Tensioner.