1000g Super Pull 1.2m steel cable passed tensile and elasticity test multiple times. It has strong pulling power and is not easy to break, to avoid panic, forget to close the door, and achieve a safer feeling time. MATERIAL Our closes -automatic doors are made of ABS plastic shell, which is resistant to oxidation, corrosion, abrasion, weather and rain, has high temperature resistance and long service life . Applicable to most door types Our automatic door closers are suitable for most doors, eg. Doors with stronger closing force, doors that can be opened left and right, wooden and metal doors, residential and commercial doors, exterior / interior doors, fire door. Quick InstallationThe punch-free automatic sensor door closer is installed with non-porous adhesive (installation and use, use after 24 hours), strong adhesion and will not damage the wall. Large range of applicationsMulti-functional automatic door closer, closing most doors automatically. Very suitable for families, small offices, hotels, dormitories, classrooms, businesses, sheds, classrooms and home offices. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.