Black Small Deck Seal Connector.83" Cables -.35"-.55"For connectors up to Ø21mm (0.83"). Cables from 9-14mm (0.35"-0.55")The only guaranteed and proven watertight installation for your antenna and navlight cables! The DS21B-P provides waterproof cable routing and is produced in high impact plastic for Cables from 9-14mm (0.35"-0.55")