The hinge is made of galvanized metal iron, and the left and right control buttons are designed, which can be easily matched regardless of the family style. Also, given their size, they are not visible most of the time Folding stand is ideal for applications with limited space & flexibility, such as kitchen, laundry, retail/grocery, warehouse/industrial maintenance storage, office/residential storage. Put them on the legs or table to fold the legs to the DIY table or bed, fold items on the table, fold the extensions of the table, etc The elastic hinged table leg frame can be adjusted to 90°/ 0°, which can easily adjust the sofa bed, sofa or other furniture Easy to fold and self-lock-In order to increase safety, these brackets have a spring-activated "forced lock" that can be fixed by locking in the open position. When you are not using a desk or workbench, just click the latch and fold it down to get more space Folding self-locking table frame, the maximum load is 105kg (230lbs.)/pair. These load limits are provided as general guidelines and are not intended as express or implied guarantees. These brackets work better when applied to furniture legs or narrow, simple work surfaces