These SHENGHUISS boat hinges are built to withstand the harsh marine environment! Made from 316 stainless steel, which is the good stuff for saltwater applications - way more corrosion-resistant than regular stainless. The T-strap design measures 4 inches by 2 inches, and each hinge has 6 mounting holes for secure attachment. The package includes 2 hinges, plus 4 screws and 4 nuts, so you have everything you need for installation. The surface is smooth with no burrs, so your doors will open and close smoothly without catching. The anti-skid design is a nice safety feature that prevents doors from swinging unexpectedly. Installation is straightforward - no special tools required, just basic drilling and screwdriver work. They're not just for boats either - perfect for RVs, outdoor cabinets, garden gates, sheds, or any application where you need durable, weather-resistant hinges. The 316 stainless steel is seriously tough stuff that won't rust or corrode even after years of exposure to saltwater, rain, or humidity. The casting quality is excellent - no porosity or weak spots that you sometimes see in cheaper hinges. The six-hole pattern provides plenty of mounting options and distributes the load evenly. Whether you're replacing worn-out hinges on your boat or building something new that needs to stand up to the elements, these hinges deliver professional-grade performance. The price is really reasonable for the quality too - marine-grade hardware can get expensive, but these offer great value without compromising on materials or construction.