These concealed cabinet hinges are made of nickel plated steel, zinc coating to prevent rust and corrosion resist, sturdy load-bearing material provides strong support. 1 pair cabinet hinges allow to be provided maximum 22lb load bearing support, strong enough to withstand everyday use. Suitable for wooden door or cabinet, installed in the cupboard, wardrobe, wardrobe, TV cabinets, bookcases, wine, and other luxury door. You can use it for kitchen, bathroom, garage and so on. Built-in hydraulic dampening device, it will close slowly, hold up without slamming shut and protect your fingers from being crushed. No need to open the hole, easier and faster to install, require minimal carpentry skills. (Mounting screws are included). There are 3-way install way - Fully Covered, Partially Covered, Embedded. Opening Angle: 90°, 12 Pcs hidden hinges, Manufacturer: Shun Yingtong