The pivot hinge is made of high-quality stainless steel, rust-proof and corrosion-resistant. It supports heavy and wide doors with ease and stability. Durable. This hinge allows for the creation of a rotating door that can swing 360 degrees, ideal for bookcase doors, bookshelf doors, cabinet doors, panel doors, and more. The hidden door hinge features a unique upper and lower connection design, supported by the bottom arm and floor, reducing pressure on the frame. It offers enhanced strength and stability, capable of supporting weights up to 100kg/220lbs. Installation instructions are included, guiding you through each step for easy setup. Package includes: 1 set of pivot hinges with screws, 1 door stop ball. Color: silver. Material: Stainless steel. Type: Heavy/Type I. Package Contents: 1 set x hidden door hinge. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.