Package includes: 8 x pivot door hinges (without screws). Material: stainless steel hinge, rust-proof and durable. Size: 57 x 16 mm, thickness: 2 mm. Easy to install: the hinge has an upper and lower structure, the lower part is fixed to the ground, the upper part is fixed to the door, and the door rotates around the central axis, the installation will become easy and quick. Applications: the concealed rotating door hinges are suitable for interior doors, screens, invisible doors, wooden doors, revolving doors, alloy doors, cabinet doors, creative screens, etc.