Description: 1. Spring door closing: The built-in spring is equipped with strong double springs, which can effectively control the opening and closing speed and strength of the door, so that the door can be closed automatically with cushioning, avoiding bangs and damage. 2. Noise reduction roller: smooth roller, noise reduction when closing the door, wear-resistant and durable, small friction with the door rail, reducing noise and vibration, allowing you to enjoy a quiet living environment. 3. Universal for left and right: regardless of left and right, left and right doors can be used, no need to worry about the installation direction, just follow the steps in the manual and simply fix it on the door, which is convenient and quick. 4. Wide range of application: a variety of scenes, easy installation, adjustable strength, applicable to most home scenes 5. Adjustable strength: The strength is adjustable, according to your needs and preferences, you can adjust the strength of the closer by rotating the adjustment screw, so that the opening and closing of the door is more in line with your habits and comfort. Specification: Product Name: Household Buffer Door Closer Material: ABS Packing boxes Packing List: Household Buffer Door Closer*1 set