Weight: 0.8 kg Size: 97.8 x 147 mm Color: as shown Leave open within the range of ;opening from 90 to 100: The automatic door closer with locking function. When the door opening range stays at 90-100, this door closer with damper can keep the door open at any angle where your force stops. To meet your needs, you don't need any external force or additional door stopper to hold the door open. And the blockage can be solved easily by simply pulling the door range from 0 to 90. Small size, powerful function: This door closer hinge integrates automatic door closing, ;damping, hold function and hinges in one. Replace the original hinges with this invisible door closer to remove door, floor and wall stops, dampers, interior door closers and door clamps. Restore the original beauty of doors, floors and walls and reduce their burden. Family partner: Compared with traditional door closers, the soft close door closer has less pressure. #39;lower door opening, so there is no difficulty in opening the door. It will be a friendly partner for the elderly and children, and it will be more suitable for family use. The hydraulic door closer is hidden in the hinge, so it will not harm the elderly, children. And it will not cause any damage to doors, walls, floors.