Need a door that closes smoothly on its own? This hydraulic door closer is built for heavy doors weighing 25 to 85 kg. It includes a slide track arm and a sturdy iron cover for a clean, modern look. You can adjust the closing speed and latching speed with two separate valves. It also features a back-check function, delay action, and an adjustable opening angle limiter. Fits most door types – wood, aluminum, steel, security doors, and fire doors. Installation is straightforward with included English instructions and diagrams. Available in black or silver. Ideal for homes, offices, shops, or any space where you want controlled, quiet door operation. A reliable solution for safety and convenience.