Ideal for wooden and aluminum doors: screws and an Allen key are included in delivery, they are a complete accessory. Very suitable for home use, light office, shed, ranch and home office. It is also very suitable for wooden and aluminum doors in hotel rooms, indoor and outdoor areas. Aluminum alloy material: the door closer is made of high quality stainless steel. quality, chrome-plated, rust-proof and durable, spring-loaded operation, fully automatic closing, simple and safe door lock protection. Reduce noise: It can reduce the door closing force to avoid damage the door. Protect the door from damage and reduce noise. The tension can be adjusted and the adjustable screw can be closed slowly or quickly, creating a quiet and comfortable environment. Decrease the closing force: The automatic door closer reduces the closing force. Fully automatic closing and adjustable speed guarantee a safe door closing mechanism. Easy to install: Installation is also very easy. You need to remove the pin first, then use an allen key to twist the end and align the appropriate holes, then insert the pin. You can do it yourself. Size: refer to the size picture Color: Black Quantity delivered: 1 piece