The concealed door hinge can support the 90-pound heavy door, and can open and close the door at an angle of 180 . The hinge size is 6 x 2.5 x 1 inch, applicable to wooden doors with a thickness of 35mm and a width of Less than 1000mm, such as bedrooms, kitchens, living rooms, classrooms, hotels, offices, wooden houses, shops, dormitories, etc. With the angle design of horizontal opening of 180 , the door can be opened and closed silently from multiple angles to reduce friction and enhance service life. Each Silver hinge is equipped with four Silver slices, which are installed on the top of four hinges to hide them and integrate with the hinge itself. The has advanced and modern sense. The high-quality material is made of high-quality zinc alloy material, which enhances the corrosion resistance, durability and rust resistance of the hinge itself, reduces the loss of the product, improves the service life of the product, and provides high-quality cost-effective hinge. The concealed hinge is easy to install. We attach detailed installation instructions to solve the installation and use problems for all customers. Our heavy door hinge has three-dimensional adjustability, with 2.0mm in horizontal direction, 3.0mm in vertical direction and 1.0mm in depth. Includes 2 x Silver hinge, 6 x right angle wrench, 12 x screw, 8 x Silver sheet. Color: Silver Material: metal Package Contents: 2 x Silver hinge 6 x right angle wrench 12 x screw 8 x Silver sheet Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.