1、Wide Application: Cup drink holders can be mounted on tables, dashboards, countertops, seat backs on your boats, cars, and RV to suit your every need. 2、Main Function: Cup holder insert reduces noise and prevents the beverage container from sliding, as well as preventing cups from tipping over and water from spilling. 3、With Drain Hole: The cup holder is equipped with a self draining hole with a hose barb to drain out the liquid content from the cup. 4、Advanced Material: Car cup drink holders are made of premium 304 stainless steel and rubber, which is rustproof, not easy to deform, sturdy and durable and has a long service life. 5、Easy to Install: The cup holder can be easily installed almost anywhere, and not easy to loose, more convenient to operate.