Holds Your Beverage Securely Sturdy black plastic cup holder large enough to hold your favorite beverage securely. The top lip has an attractive chrome finish. Designed for Large and Small Beverage Containers The bottom of the cup holder is designed to hold either large containers or smaller containers securely and safely. The main inside diameter is 3 1/2". That diameter extends down 2 1/2" to within 3/4" of the bottom of the cup holder. At that depth, the diameter of the cup holder decreases to 2 1/2" in order to securely hold smaller containers. This design feature is shown in the main photograph.