1Rugged Construction: The boat rowlock socket is made of durable 316 Cast Stainless Steel that provides excellent rust protection, making it perfect for harsh environments such as saltwater. 2Enhanced Sheer Strength: With an edge mount design, the oarlock sockets provide more horizontal sheer strength. They are attached to the inside of the gunwale and are screwed on the top and side. 3Mirror Polish Finish: The rowlock socket features a mirror polish finish that adds an aesthetic appeal to the boat, with plastic bearings to prevent rattling while oarlock in use. 41/2in Hole: The sockets are specifically designed for use with 1/2 inch diameter shank oarlocks, providing convenience for different types of rowing equipment. 5Suitable for Various Water Environments: The oarlock support bracket is designed to be used in both fresh water and sea water, making it a versatile choice for boat owners who enjoy rowing in different settings.