Easy InstallationThe hidden door hinge is equipped with a telescopic pin for adjusting the up and down telescopic distance, easy to install. Comes with anti-cutting gloves to care for your hands.High-quality Metal MaterialsThe hidden door hinge is made of high-quality metal structure, including solid stainless steel plate and screws, which is resistant to deformation, corrosion and high temperature, and is more durable. The high-quality materials are rust-proof and finely processed, with a super long service life.High Strength and High LoadThe hidden door hinge has a unique high-strength and high-load pivot design, the base supports up to 260 KG/570 LB, and the heavy-duty pivot hinge comes with 30 screws. The upper and lower fixed bearing structure is stable and can rotate flexibly.Application Hidden door hinges apply various types of invisible doors. It is generally used in wooden doors, bookcase doors, hotel interior doors, etc., which belong to the hinge hardware of furniture and building decoration.360 Quiet RotationThe pivot hinge is installed on the central axis of the door, and it can rotate 360 degrees flexibly and quietly in linkage with the upper and lower parts. The hidden door hinge shaft can rotate at multiple angles to achieve a high-end and outstanding hidden effect, and the quiet rotation makes it more mysterious.