Functions: 1. The main feature of this door closer is that the closing speed of the door is adjustable. You can adjust the closing speed of the door according to the speed you and your family enter and exit. For families with children and elderly people, it is recommended to set a slower speed. 2. Closes easily and won't fall off. Please check before purchase if your door complies with your needs. 3. The adjustable door closer is manufactured Made of high quality aluminum alloy. From an optical point of view, the silver metallic color can be easily combined with doors in different colors. In terms of performance, the product is lightweight and has good abrasion resistance. rust and corrosion. performance, not easy to cause damage. Technical characteristics: suitable for a door weight of 45-65 kg. Center distance: 162 mm x 19 mm. 1 hour test. Adjustable latch/lock speed. Tested for 1,000,000 operating cycles. Suitable for left and right doors. Contents: 1 adjustable door closer.