Completely concealed design: Concealed hinges can be used to create invisible doors, folding doors, and other feature walls. Seamless hidden hinges make your door look stylish and sophisticated The Product Includes: 2 invisible door hinges, 1 detailed instruction manual, a set of three-dimensional adjustment tools, 2 gap thickness gaskets under the door, and corresponding product drilling bits Easy Installation: Features adjustable hinges, making installation a breeze. The hinge is three-dimensionally adjustable: vertical ±2.5mm, horizontal ±2.5mm, and depth ±1.0mm. Hinges can be adjusted without disassembling the door Product Quality: Our hinges are made of high-quality zinc and alloy materials, and wear-resistant nylon gaskets are added to be silent and wear-resistant, ensuring long-term sturdiness, durability, silence and no abnormal noise. Durable and great value for money Applications Dimensions: 6 x 2.5 x 1 inches Four-axis load-stable load-bearing 1 hinge will support 44 lbs, 2 hinges will support 88 lbs, applicable door size, door thickness 35mm to 40mm, door width