CONSTRUCTION: Marine City Fixing Covered Short-Sided Strap Hinges are made of 316 stainless steel, are high-quality material, and have long-term durability. DURABLE QUALITY: It is made of corrosion-resistant stamped stainless steel to be rust-resistant, strong endurance, and resilient in all situations, even salt water. EASY TO INSTALL: Cover Caps can be fitted as an extra layer of protection to keep screws from rusting. RH #8 flat-head mounting screws are required for installation (This order does not include screws). WIDE APPLICATIONS: This door hinge is suitable for power boats, yachts, sailing, and fishing boats (Sold in pairs). DIMENSIONS: Length: 56.7 mm / 2.2 inches, Width: 36.5 mm / 1.5 inches, Thickness: 2 mm / 0.08 inches, Screw holes’ diameter: 5.4 mm/ 0.2 inch.