Premium MaterialMade of sturdy copper, rustproof and corrosion resistant, durable and sturdy to use. Fine workmanship and fine processing ensure its extra durability. Widely UsedWidely used in hotel, wooden door, cabinet door, counter or light commercial car table and other DIY projects. You can make your own pens, pencils or other small boxes or boxes with these small barrel hinges. Unique DesignThis invisible hinge can be rotated 180 for a easy to use. No noise The cylindrical hinge has a very high quality mechanism to close the door slowly for a smooth and silent movement. Easy to install The Built-in screws help to fix the placement, easy and convenient installation, just drill and insert the hinge to finish, not easy to fall off.