This cup holder is made up of highly polished stainless steel, hard and durable, anti-corrosion, and antioxidant, this excellent quality product can easily replace the plastic cup seat, suitable in marine environments. It’s highly durable stainless steel, and corrosion resistant, and great for boats, poker tables, countertops, dashboards, seatbacks, and many more. Easy to install and use, easily installed almost anywhere like on a table, countertop, dashboard, etc. It is an excellent product that can replace plastic drop-in cup holders easily. Dimensions: Height: 3-1/4 inches, Flange: 4-1/4 inches, Barb: 3/8 inches. Package includes: Pack of 1 Marine City Stainless-Steel Drink Cup Holder with Drain.