ITEM NAME:Black No Holes Recessed Cup Drink Holder for Sailing/Marine/Boat/Car/RV Description: No drain holes in the bottom to keep moisture away from electronics or other items below. Install almost anywhere on boat, game table, sofa, cars and RV. Cut hole diameter requires 3-3/4"(10cm); Flange dia. : 4-1/4"(11cm); cup deep 3-1/4"(8.3cm). Smooth surface for easy cleaning. Package Includes: 1 Piece Cup Holder Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.1 Piece Cup Holder. : 4-1/4"(11cm); cup deep 3-1/4"(8.3cm). Smooth surface for easy cleaning.