CruzCup - Beverage Holder. Zinc plated fasteners to avoid rust. Strong and durable beverage holder for bikes, boats, strollers. Anything with 7/8" or 1" bar(s). Fits standard 12 oz beverage cans and 16.9 oz water bottles. Honeycomb walls insulate your drink. Shock absorbing bands help cushion when traveling over bumps and holes. See other listings to upgrade to 18-8 stainless or 316 Marine stainless fasteners.