Beckson "Beckson Marine 5 Twist-Out Deck Plate - Black, DP50-B"

"Beckson Marine 5 Twist-Out Deck Plate - Black, DP50-B. The low profile cover is self-centering and quickly locks in place with a 1/8 twist. Three seperate sealing areas each designed to chase water away from the plate opening assure a watertight closure.