Applicable space: Universal design, used for right or left doors, suitable for family, office, hotel room doors. Adjustable resistance: Adjustable screws, adjustable tension, slow or fast, can be adjusted according to your living environment. Material: Made of aluminum alloy, strong and durable, not easy to rust. Solid arm: Thickened solid arm to close the door more easily. Package content: 1 automatic door closer, 4 screws Size: About 167*125mm luckymeet