1000g Super SweaterThe 1.2 m high quality steel cble has passed the tensile and lasticit test several times. It has a strong pulling power and is not easy to break, to avoid panic, forget to close the door and get a safer time of sensation. HIGH QUALITY MATRIX Our automatic door closers are manufactured from a high quality ABS plastic shell, which prevents oxidation, corrosion, abrasion, weather and rain, has a high resistance to temperatures and a long life expectation. Applicable most types of doorsOur automatic door closers are suitable for most doors, e.g. Doors with a stronger closing force, doors that can be opened left and right, wooden and matt doors, rsidential and commercial doors, extrieures / interior doors, fire door. Quick installation The automatic door closer sensor without perforation is installed with a non-porous adhesive (installation and use, use after 24 hours), strong adhrence and will not damage the wall. Wide range of applicationsMultifunctional automatic door closer, closing most doors automatically. Very suitable for families, small offices, htels, dormitories, classrooms, businesses, sheds, classrooms and home offices. Number of pounds: 4 Color: white and black Size: force 1000 carats + wire length 1.2 meters + wire diameter 1.2 mm