【High quality】The automatic door closer is made of aluminum alloy cast in one piece and assembled with multiple channels, which makes the whole product sturdy and durable. Adjustable Tension: The tension of the door closer is adjustable and it closes slowly or quickly With an adjustable screw, creating a quiet and comfortable environment. Protects the door from damage by reducing the closing force. Protects the door from damage and reduces noise. Size: approx. 6.5 x 4.9 x 1.2 inches, suitable for door weight 20-40 kg, door width 1000 mm, universal design, right or left swing door, ideal for home, office, hotel room doors. Note: Please measure the doors before ordering, suitable for the weight of the door from 20 to 40 kg, door width 1000 mm. The closing force of our door closers can be adjusted to your personal needs solely by using the fixed or loose round key. 【Many application scenarios】Automatic door closers are suitable for left and right doors, wooden doors, metal doors,