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 construction allows for smooth operation. Ideal for creating a rotating door that turns 360 degrees. Suitable for use with bookcase doors, bookshelf doors, cabinet doors, panel doors, and similar applications. The hidden door hinge features a unique upper and lower connection design, supported by the bottom arm and floor, reducing stress on the frame. This provides enhanced strength and stability, capable of 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 hook hardware. Color: silver. Material: Stainless steel + wood. Type: Heavy/Type I. Package Contents: 1 set x hidden door hinge. Only the items listed are included; other products are not part of this package. Note: Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.