1、The glue is installed without holes, is firm and will not damage the wall, easy to install and high temperature resistance. 2、This product is an anti-oxidation, anti-corrosion, no rust, stable and wear-resistant, quiet and safe cutting device. 3、The high-quality P12 steel rope has passed 50,000 times of tensile test and rebound test, and has a strong tensile force. 4、Small size, easy to carry and store, convenient to use and with good performance. 5、Wide range of applications, can be used for company office doors, home doors, etc. 2 x Closer2 x Hex Wrench Item Type: Automatic Door Closer Sensor Material: ABS, p12 steel ropePurpose: Fixed on the door, automatically close the door