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 invisible door hinges are specially designed for invisible doors. This product requires drilling and grooving, which requires you to have certain DIY skills. If you are not familiar with the installation process, it is recommended that you hire a professional to install it.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.Product Quality : Our hinges are made of premium 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 moneyThe 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 bitsApplicationsDimensions: 7 x 2.8 x 1 inches Four-axis load-stable load-bearing 1 hinge will support 87.5 lbs, 2 hinges will support 175 lbs, applicable door size, door thickness >40mm , door width