General description CCYKXA 8 Pack Stainless Steel Cupboard Door Hinges are designed for a smooth and silent door movement with a high-quality hydraulic mechanism that gently pulls the door closed. These invisible hinges are perfect for various applications, including kitchen cupboards, cabinet doors, and bookcases, making them suitable for homes, hotels, schools, hospitals, and offices. Technical specifications Material: Cold rolled steel Opening angle: 90 degrees Plate thickness compatibility: 16-19mm Issued quantity: 8 Installation No need to open the hole for installation Easy installation process