[Sturdy Construction] The hidden door bookcase hinge is fabricated from solid alloy steel, ensuring unparalleled endurance and withstanding and fracture. Enjoy outstanding performance and fine workmanship for extended service life [Wide Compatibility] The hidden door hinge is specifically designed for wooden and aluminium-framed doors, ideal for doorway solutions. The pivot hinge is suitable for heavy-duty doors, secret doors, hidden door bookcases and bookshelf doors [Simple Installation] Upgrading your doors is as easy as installing or replacing the swinging hinges for secret doors, which require only basic tools. The design is both practical and elegant, and strong enough to cope with most situations [High Load-Bearing Capacity] Designed to support up to 570 lb (260 kg), the stainless steel hidden door hinge features premium alloy steel and advanced construction. With screws for fixing, the hardware swinging pivot hinge provides the ultimate stability for your secret doors [Package Includes] Package comes with 1 x Hidden Door Hinge, 1 x Glove. The sturdy hidden door hinge allows for smooth and silent operation, bringing you an exceptional experience, Weight: 2.61578473863 Pounds, Manufacturer: NONDK