The hinges are made of solid cold rolled steel plate, nickel plated on both sides, with steel nails sealing treatment at the welding points, the main structure is tight and not easy to fall off Installation - Determine the installation position, mark the screw holes with a pen, drill holes and install the hinges with screws, after the installation is completed, test the hinges to ensure that they can be opened and closed properly Durability - Due to its special design, the folding hinge can withstand greater weight and is less likely to be damaged Multi-purpose - Hinges are widely used in folding doors, folding tables, crates, stands, folding tables and chairs, etc Hinge closure type is hard closure, the stress point is in the closed state, the open state is not stressed. The angle of the closed state is about 85°, not fully reach 90°, when needed, you can put the shims when installing the hinge to reach 90°, Weight: 0.440924524 Pounds, Manufacturer: KAFENDA