Steel Material: The cabinet hinge is made of high quality cold rolled steel, rust and corrosion resistant, good hardness, precision design to ensure long using time .90/180 degree opening angle: The hidden hinge can bend from 90 degrees to 180 degrees. It uses a special mechanism to slowly close the furniture to achieve smooth movements without creating annoying noises.Easy to install: 16 pieces of screws are also included, all you need is a screwdriver to complete the installation. It can be installed on the corners of furniture without damaging the surface.Versatile: Hidden hinge is suitable for doors, cabinets, tables, kitchen doors, cabinets, bookcases, wall racks,bedrooms, balconies, bathrooms, gardens, offices, etc.Size: The size door hinge size: 6.8*6.8*2.2cm, screw size: M4*16mm. enough to meet your installation needs. Very compact, it takes up very little space.Features:1. Cabinet door hinge is made of high quality cold rolled steel ,rust and corrosion resistant,good hardness,precision design to ensure long time use.2. 90/180 degree opening angle, uses a special mechanism to close the cabinet slowly to get smooth and quiet movements. 3. 16 pieces of screws are also included, you just need a screwdriver to complete the installation. 4. Our 90 degree folding shelves hinges are suitable for a use on doors, cabinets, tables, kitchen doors, cupboards, bookcases, wall racks, bedrooms, balconies, bathrooms, gardens, offices, etc.Specifications:Material: cold rolled steelSize: hinge: 6.8*6.8*2.2cm, screw: M4*16 mmColour: silverPackage:2 * furniture hinge8 * fixing screws