This is a Brass Dual Size Drop In Drink Holder designed to fit into a hole in the table. This cup holder can fit your standard can as well as larger beverages ? up to 3 1/2 inches in diameter. Our cup holders can be permanently mounted to the table or remain removable from the table. Because this cup holder is constructed from Anodized Brass it retains its luster and is both durable and rustproof.Wrap 1 " wide masking tape around the outside of the cup holder to achieve the desired diameter. We recommend you wait until you receive the cup before drilling your mounting holes.