This item is a door closer, weight about 35kg. Made by material, long service life. Easily installed, don't need to broken the door, floor or wall, just need an screwdriver and screws. Suitable for most kind of home use door and indoor door. Features - Color: As shown - Material: Aluminum alloy - Size: About 20x8x2cm - Made by light weight aluminum material and strong power spring, perfect fit with your door. - Easy to install with your home use door, only need a few screws. - Adjustable design allow you choice the best required thrust to open or close a door. - 35 kilogram max weight for the door, fit for most kind of wood door and indoor door. - Good choice for home finish diy. - Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you