2-Pack Swivel Door Hinges - 360 Degree Rotation, Heavy Duty Concealed Stainless Steel with Mounting Screws (130 x 25 mm) Robust and Durable: Crafted from heavy-duty stainless steel for maximum corrosion resistance and durability, these concealed hinges provide reliable support for years to come. Convenient and Invisible: Featuring a unique ball design, these 360-degree pivot hinges offer a simple and effective way to swing your door effortlessly and quietly. Solid pivot hinge with robust design and nearly invisible smooth bearings. Easy Installation: The upper pivot point comes with a retractable pin for quick and easy installation. The concealed pivot hinge can be mounted at the top of the door and attaches to a hole on the door surface. Wide Applications: Concealed pivot hinges are perfect for swing doors, doors, and more. An excellent pivot adjustment option when door weight puts a strain on traditional door frame hinges.