Keep open in the opening range of 90~100: The automatic door closer with locking function. If the door opening area remains 90~100, this door closer with buffer can keep the door open in any angle where your force stops. To meet your needs, you don't need external force or additional door stopper to keep the door open. And the opening can be easily loosened by simply pulling the door part at 0~90. Buffer and automatic closing function: The door opening area remains 0~90 and 100~180. Automatically and silently closes the inner and outer door. You don't need to shout "close the door". Compared with the clip door closer, the door closer automatically reduces the closing speed when the door is between 0 and 15 so that the door closes slowly and the wall is not damaged. Closing the door will no longer be tedious. Small size, strong function: This hinge door closer integrates automatic door closing, damping, holding function and hinges. Replace the original hinges with this invisible door closer to remove door, floor and wall stops, dampers, interior door closers and door clamps. Restores the original beauty of doors, floors and walls and reduces their load. A family-friendly partner: Compared with conventional door closers, the door closer has less pressure on the door opening, so there is no difficulty in opening the door. It will be a friendly partner for the elderly and children, and it is more suitable for family use. The hydraulic door closer is hidden in the hinge, so it does not harm the elderly or children. And it will not damage doors, walls, or floors. Widely used: This exterior door closer is made of high-quality 304 stainless steel and is filled with hydraulic oil. Exterior door closers can work normally in extreme environments. Spring door closers are non-manual door closers. Therefore, they can be used for both left-hand and right-hand doors. Very suitable for swing doors, interior doors, exterior doors, garden doors, entrance doors, screen doors, glass doors, bedroom doors, or balcony doors. Quantity delivered: 2 pieces Product color: silver Product specification: 125*75*14mm (with an acceptable error) lucky meet