1Convenient Storage: The main function of the holder is to provide a convenient place to hold drinks, preventing them from tipping over or spilling when placed on a table or other surfaces. 2Space Saving: Space is often limited inside boats or other recreational vehicles. By using a cup holder, you can save some valuable space, making the entire setting more comfortable and spacious. 3Waterproof Design: Ring cup holder is made from stainless steel, which is not only durable but also waterproof and easy to clean. This makes it a convenient accessory for any water based activities. 4Versatile Usage: Widely used in various settings such as RVs, office desks, tour buses, motorhomes, boat accessories, yachts, fishing boats, and more. Holder's versatility makes it a practical and functional addition to any environment. 5Easy Installation: The cup holder is easy to install, simply drill holes and secure it with screws onto metal or other surfaces. This ensures a secure installation that will withstand movement and shaking.