SeaLux Stainless Steel Adjustable Fold Down cup drink Holder for boat, car Fabricated from 304 stainless steel, Corrosion resistance. Highly mirror polished finish and elegant esthetical design The space saving folding design is also equipped with molded silicone retainer arms to adjust to varying size of cans, cups, cozies and mugs. The ultimate in function, style and space efficiency. Ideal product for automobile, watercraft, RV. Easy installation, could be mount on any flat vertical surface.