ITEM NAME:5x51mm Stainless S Spring Loaded Quick Release Pin for Boat Top Deck Hinge Description: Material: Marine Grade 316 Stainless Steel Quick release pin for easy installation Strong and durable, long lifespan Widely used in various shipbuilding, ship outfitting Every production.1 Piece Boat Hinge Pin. Quick release pin for easy installation. Material: Marine Grade 316 Stainless Steel. The color may have different as the different display.