The pivot hinge is made of high-quality stainless steel, rust-proof and -. It supports heavy and wide doors with ease and stability. . Add of mystery and to your space with this pivot hinge. You can create a hidden door that rotates 360 degrees. Perfect for bookcase doors, bookshelf doors, cabinet doors, panel doors and more. The hidden door hinge is a upper and lower connection design structure, which is supported by the bottom arm and the floor, thereby reducing the pressure on the frame. This gives it more strength and stability to support weights up to 100kg/220lbs. Our instructions list every step of installation, if you follow it, you install the pivot hinge easily. 1 set of pivot hinges with screws, 1 goal ball hook hardware. Colour:silver Material:Stainless steel+wood type:Heavy Package Contents: 1 set x hidden door hinge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.