Amarine-made 1 PCS Stainless Steel Rail Mounted Adjustable Folding Drink Holders Marine/Boat/Caravan/car for 1" (25mm) Vertical or Horizontal Rail Folds flat to protrude only 22mm when closed, 102mm when open Adjustable retainer arms, holds cups or cans from 55mm to 75mm diameter High quality, high polished stainless steel construction,specifically designed for marine applications Easy to install - Includes stainless steel mounting adjustable clamp for 1" Vertical or horizontal rail (25mm) Equipped with silicone mouldings on the retainer arms, and foam coaster on the inside of the drink holder, to reduce noise and prevent drink container from sliding Sleek appearance to suit today's modern watercraft