MAGNETIC BEVERAGE HOLDER - Powerful magnets attach to almost any metal surface, and the cup holder allows you to easily access your favorite beverages. Use it for riding lawn mowers, tractors, metal tables, heavy construction equipment, cars, garages, workshops, boats and more. It's perfect for tailgate parties, just stick it on your car. Keep your drink upright - drinks or cups are not included with purchase. Unique design keeps your drink in an upright position. Suitable for horizontal planes. Do not attempt to install a drink holder using the sidebar No Scratches - The magnets on the cup holders are covered with rubber. Does not cause scratches. Dimensions - The cup holder is 2.75" in diameter and 3.54" tall. Fits most soda cans, beers, cokes, glasses, bottles, phones, as well as pens, pencils, gadgets, and more! Triple protection design - 1. This cup holder is made of stainless steel and will not rust after many years of use. Most of the cup holders on the market are low-quality rust-prone cup holders. 2. The bottom of the cup holder is designed with multiple drainage holes, so that water will not accumulate during use. 2. The cup holder is designed with a buffer protection layer to increase the protection of the cup.