Sea-Dog LED Flush Mount Combo Drink Holder w/Drain Fitting - Blue LED. The flush mount dual-purpose design allows the use of beverage cans with or without insulated wraps as well as most standard size bottles. 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" hole for installation. The bottom is padded with a rubber insert to prevent rattling. 12VDC. Features of Sea-Dog LED Flush Mount Combo Drink Holder w/Drain Fitting Color: Red Three LED lights Padded rubber bottom Drain holes Package Contents: Sea-Dog LED Flush Mount Combo Drink Holder w/Drain Fitting Sea-Dog 588074-1: LED Flush Mount Combo Drink Holder w/Drain Fitting - Blue LED