These deck hinges are made of Marine Grade 316 Stainless Steel, are rust and corrosion resistant, and are designed to withstand the harsh marine environment. They are easy to install and can be rotated 360 degrees, allowing you to open and close your Bimini top with ease. The hinges are attached to the Bimini top eye end, and feature a sturdy design that ensures long-lasting performance. Whether you are on a boat or at the beach, these deck hinges are the perfect accessory for your Bimini top.