The 90 degree locking hinges are made of galvanized iron that can be easily matched with any family style. In addition, given their size, they are not visible most of the time. Self-locking hinged leg accessories can be adjusted 90/0, easy to adjust on the sofa bed, sofa or other furniture to fold and expand. Easy to fold and self-locking to improve safety, the foldable leg support has a spring-activated "force lock" that can be locked in the open position to ensure stability. When you're not using a desk or workbench, just press the latch and fold it up for more space. Folding stand dimensions: see photo. Put them on legs or table for tables or beds, folding tableware, folding table extensions, etc. Big ideas in small spaces - Ideal for restricted/flexible applications such as kitchens, laundry, retail/grocery, marine, warehouse, industrial, garage, warehousing, maintenance storage, office or residential storage. Place them on stands or tables. Fold legs for tables or beds, fold tableware, fold table extensions etc.