Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si [Premium Quality]Automatic door closer is made of aluminum alloy , Spring operation, totally automatic closing; antioxidative, anticorrosive, weatherproof, steady, abrasion resistant, quiet and safe closer [Keep Your Home Quiet and Safe]Automatic closing and latching, maintaining quiet and security. Use these door closers to convert hinged doors to self-closing ones and you don't have to worry about your kids escaping from home or your pet /cats running into your room [Double Springs]This door closer is equipped with double springs, offering stronger strength to accommodate doors of different thicknesses [Easy Installation]With a door closer and slide plate being surface mounted, installation is a breeze.This spring door closer can be used on doors up to 30 kg, and easily adjust the tension on this safety spring door closer [Proper Size] suitable for door weight for 20-30 kg, universal design, right or left wing door, Perfect for home, office, hotel room doors Please note; the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:black+white Material:Aluminum alloy Package Contents: 2 x Door Closer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.