SpecificationSize: 66mm(2.6")x66mm(2.6")x50mm(2") with a thick 2.5 mm high-strength steel plate, rolled and formed. Easily Fold and Self-LockThe angle is 90 degree in the up position. These lock extension hardware feature spring-activated "positive lock" that assures stability by locking and increase security in the open position. When the table or working surface are not in use, just press the latch and fold down for more rooms, the foldable hinge will be locked automatically. Strong & Heavy DutyThe foldable self-lock hinge is made of metal, anti-corrosion, strong and practical, hold up to 500 pounds. ApplicationThe table legs foldable hinge suitable for folding furniture, such as: dining table, bed, folding workbench project, fold down desk. Can be installed in kitchen, laundry room, office/residential storage, retail/grocery stores, warehouses, industrial, garages, maintenance storage, RV, boat. Easy Install Installation method: According to the physical hole pitch specification of the product, place it where it needs to be installed, and then use rivets/screws/direct rotation until it is locked. (Included 40pcs matched screws)