Flush Mount Combo Drink Holder with Red LED Light & Drain Fitting by Sea Dog®. The LED Flush Mount Combo Drink Holder features a dual-purpose design that allows the use of beverage cans with or without insulated wraps, as well as most standard size bottles. Three red or blue LEDs provide night vision. Integral drain fitting allows water to be drained directly into bilge with the use of 1/4" tubing (not included). Requires a 3-5/8" diameter hole for installation. The bottom is padded with a rubber insert to prevent rattling. Constructed of corrosion resistant stamped 304 stainless steel. 12VDC.