BLUE SEA SYSTEMS 2202, is a Terminal Feed Through Connector - 5/16"-18 studs (red).
Product Features
Perfect for routing high-current cables through hulls, decks, and bulkheads
Large cables passing through holes can be damaged even when protective grommets are used. Feed-through connectors eliminate chafing and provide excellent strain relief for the cable
Large terminals have a mounting surface that can be packed or bedded to provide a watertight installation