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 and ideal for creating a rotating door that turns 360 degrees. Suitable 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. This provides enhanced strength and stability, supporting weights up to 100kg/220lbs. Step-by-step installation instructions are included for easy setup. Package includes: 1 set of pivot hinges with screws, 1 door stop ball. Color: silver. Material: Stainless steel + wood. Type: Heavy. Package Contents: 1 set x hidden door hinge. Note: Light reflection and different displays may cause slight variations in color. Measurement may vary by +/- 1-3cm.