1. Door closer is made of Quality stainless steel, adopt integrated molding method and multi-channel assembly process, making the whole product durable and sturdy. It is totally automatic closing, providing an easy and life, protecting your door and lock. 2. Quality stainless steel Automatic Door closer, Non-handed design with Adjustable Tension. There are adjustable screws for slow or fast closing. You can choose your close speed to suit the environment where the closer is placed. 3. Suitable for doors opening to the left or right. Door frames and doors must be parallel. If the door frame is higher than the door, use wooden blocks or other materials to lift the support and make it parallel to the door frame. Door weight: 44 - 88lb, 20 - 40KG; door width: 1000 mm, opening angle of the door up to 150 °. Suitable for home, office, hotel room doors etc for indoor use. Please measure doors before . 4. Keep Quiet and Safe - Automatic closing and latching, maintaining quiet and security. During the break, you don't have to worry about your family members escaping from home or your pet dogs, cats running into your room.