Features: - The boat ring cup drink holders are made of stainless steel,well made and pretty. The cup-holders can be used on boat, marine, yecht, truck, RV, etc. - Using mirror polishing technology, the surface is smooth and smooth, without bristles, and feels good. - Equipped with screw mounting, the screw holes are smooth and burr-free, easy to install, stable and firm. - During the driving process, the beverage does not overflow the beverage in the bottle due to the collision. Package include: 2pcs x Ring Cup Drink Holders, 8pcs mounting screws. Usage : This Cup-holders can be used on boat, marine, yecht, truck, RV, etc. Size The cup drink holder is suitable for most Cans,Glasses and Cups size up to 2.95''/75mm diameter.