Premium Material: Our 6 inch heavy-duty door hinge is made of high-quality zinc alloy with an integral die-casting process, which improves durability, load-bearing capacity, and wear resistance. The surface is painted in gold color, which is beautiful, elegant, and fashionable, rust-proof, and durable3-way Adjustable: Hidden door hinge can be adjusted in 3 ways as needed, up or down, left or right, shallow or deep; vertical 3mm, horizontal 2mm, and depth 1.0mm. When the door is closed, the 180-degree 3-way adjustable butt hinge can be completely hidden, making your door look smooth and exquisiteEasy To Install: The kit includes screws for installation and a hexagonal wrench for adjustment, and comes with installation instructions, you can easily install concealed door hinges according to the instructions, 6-inch invisible door hinges can be adjusted without disassembling the door, it is convenient and saves timeWidely Used: This is a 6 inch hidden door hinge heavy duty, specially designed for recessed hinges hidden inside the door, can be used to create invisible doors, folding doors, and other feature walls, suitable for wooden doors, swing doors, aluminum doors, fire doors, smoke doors, soundproof doors, burglar doors and so onPackage Includes: You will receive 2 PCS 6 inch hidden door hinge heavy duty, 16 PCS screws, 8 PCS gold color caps, 1 PC hexagonal wrench, and an installation manual. invisible door hinges are 6 x 2.5 x 1 inch, perfect for doors of the following sizes: thickness >35mm, width <850mm, two gold concealed door hinges can hold up to 88 pounds when used