HINGES FEATURES--- Hinges fitted to the door frame section: 4.3*1.5*0.5 Inch, Hinges mounted on door leaf section: 3.8*0.96*0.2 Inch, Two hinges can support 133lb/60 kg of door, Open degree is 110 degree.Ultra-thin HINGES--- This ultra- thin hidden door hinges is our patented new product, the conventional invisible door hinge needs to dig deep holes in the door, which is more damaging to the door, This invisible hinge not only maintains the original features of invisibility and adjustability, but is also thinner, with a opening depth of 0.2-0.5 inches in the door, Better protection of the door to prolong the service life.HIDDEN HINGES--- Our hidden hinge installation results in a very small gap between the door and the frame, making it ideal for secret doors, the hinges virtually invisible when the door is closed. This not only creates a clean and streamlined look but also provides an added layer of security as the hinges are not easily accessible from the outside.hidden hinges are an excellent choice for anyone looking to upgrade the look and functionality of their doors.HINGES MATERIAL--- Our door hinge is made of high-quality zinc alloyembryo and aluminum alloy core, It has good rust and corrosion resistance and is sturdy and durable.ADJUSTABLE HINGES--- To ensure precise installation, we have designed the hinges with adjustable functionality to ensure that the door is positioned correctly within the frame, it can adjust the up and down as well as the front and back of the door without removing the door.