Amarine Made Boat Cup Holders for Drinks, Recessed Plastic Cup Drink Can Holder with Drain Hole for Boat Truck Car Table Black (6), Marine Cup Holder, Boat Cup Holder Insert
Dimensions: 3-1/2" H - 3 1/2"ID, 4 1/8" OD, with flange.Bottom of Cup Outside Diameter: 2.86 inches(7.27cm);With 0.12"ID (0.28" OD) drain holes in the bottom to keep moisture away.
Fit a variety of glass and canned containers.But the Yetis and tumblers do not fit this, botton is smaller that does fit perfect for 12 oz cans or solo cups,or 20oz soda or water bottle.
The drain port makes it extremely convenient. Run water or rain down from the drain port to the outboard side of the boat and there's no more worrying about having to empty out the cupholders every time it rains or someone spills.
No Mounting Screws Required Smooth Finish For Easy Clean Up
Install almost anywhere on boat, game table, sofa, car,RV, table, counter top, dashboard, seatback,etc.