344 Round Flush Deck MountSealed base for watertight applications (such as kayak decks) with splash cover.For all Scotty post mount rod holders.Dimensions: 3 3/4" diameterBolting Dimensions 2 3/16" x 2 3/16"WARNING: This product can expose you to chemicals including Diisononyl Phthalate (DINP) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov. .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }