Rod diameter: 14mm Axle height: 14.5 mm Rugged and Durable: These invisible pivot hinges are made of heavy duty stainless steel for maximum corrosion resistance and durability. CONVENIENT AND INVISIBLE: With their unique ball mechanism, these 360-degree swivel hinges provide an easy and effective way to turn your door effortlessly and quietly. Sturdy swing door hinges with a sturdy design and smooth bearings that are barely visible. EASY INSTALLATION: Its stylish design with top and bottom link function makes installation quick and easy. This invisible pivot door hinge can be installed on the top of the door and attached to a hole in the door surface. MULTIPLE USES: These invisible revolving door hinges are suitable for swing doors, kitchen cabinets, closet doors, casement windows and more. The perfect replacement door hinge to replace your broken old hinge. Note: This product does not contain screws. Specifications: length 74mm, width 18mm, aperture about 5mm Package Quantity: 2x Hidden Hinges (Only the above package contents, excluding other products)