2/4 Pieces LED Stainless Steel Cup Drink Holder Insert with Drain & LED Marine Boat Rv Camper High Quality: Consists of a stainless steel cup holder and a halo of 8 leds, durable and corrosion, this excellent quality product can easily replace plastic cup holders and stainless steel cup holders without LED 8 LED Blue Lights: Nice blue glow make your boat looks very bright and cool, you can wire them into a switch and you can turn on and off anytime, or you can spin off the bottom screws and take out the LED lights when you don't want to turn on the light during the day Easy Installation: It come with a ring of two sided tape under the flange and you can be easily installed almost anywhere like on a table, dashboard, counter top, seatback and it will not loose, equipped with firm coaster, to reduce noise and prevent drink container from sliding Draining Hole: The Posa cup drink holder with drain includes a self-draining hole with hose barb, mounting gasket and internal pad. This can be used to drain out the liquid content from the cup Dimensions: 8 LED Steel Cup Drink Holder with Drain has a height of 3-1/4 inches; Top inner dia. of 3-1/2 inches; Top outer dia. of 4-1/4 inches and bottom dia. of 2-7/8 inches with a hole cut out of 3-3/4 to 3-5/8 inches needed