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 shipment tested and certified Size Chart: Size 5X51mm = Pin Diameter: 5mm/0.20", Length 51mm/2.00" Size 5x76mm= Pin Diameter: 5mm/0.20", Length 76mm/2.99" Size 6.3x51mm= Pin Diameter: 6.3mm/0.25", Length 51mm/2.00" Size 6.3x76mm= Pin Diameter: 6.3mm/0.25", Length 76mm/2.99" Size 8x51mm= Pin Diameter: 8mm/0.31", Length 51mm/2.00" Size 8x76mm= Pin Diameter: 8mm/0.31", Length 76mm/2.99" Size 10x80mm= Pin Diameter: 10mm/0.39", Length 80mm/3.15" Package Includes: 1 Piece Boat Hinge Pin Note: Please allow 1-3mm error due to hand test. The color may have different as the different display. THANK YOU FOR SHOPPING WITH US! Have a nice day