Material: Aluminum alloy body + nickel-plated steel parts; the bracket is replaced with a nickel-plated metal bracket, which is easy to install and maintain and has a long service life. Suitable for doors in homes, offices and hotel rooms. The height difference between the door frame and the door should be less than 5 cm. If the door frame is too high, materials should be used to raise the bracket so that it is parallel to the door frame. For best results, ensure that the door opens and closes naturally without excessive resistance. The spring tension can be adjusted within a certain range Quantity: 1 set Size: Total length 18 cm Note: The data are all manual measurements, please allow an error of 1 - 3cm, due to the difference in light and display, there will be a certain color difference, whichever is the actual object received Delivery quantity: (according to the main picture)