1. This semicircular hinge set is made of high quality zinc alloy, which has high strength and durability. The opening angle is 90 degrees, recessed when opening, very suitable for desktop applications2. The 90 degree opening and closing mechanism makes it very convenient to use, and can be used with cabinets or flap doors. It is a reliable product with more than 50,000 opening and closing hours3. Integrated hinge, adjustable accessories, used for wooden flaps and lid, supports up to 10 kg4. Folding wooden round hinges, concealed double cup hinges, fully open and hinged cabinet doors, lift hinges, flap hinges5. Folding hinges are suitable for kitchens, bedrooms, wardrobes, cabinets and other small furniture