ITEM NAME:6.3mmx76mm Marine Grade Stainless Steel Boat Quick Release Pin - Marine Hardware 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. Material: Marine Grade 316 Stainless Steel. Quick release pin for easy installation. Size Chart.