800 g super traction: The premium 1.2m rubber coated steel rope passed multiple tensile and rebound tests with strong tensile strength not easy to break to avoid panic when you forget to close the door and feel more secure all the time.Fits most types of doors: Our non-perforation automatic door closer is suitable for most doors such as doors with slightly stronger closing force which opens left and right wood and metal doors residential and commercial doors exterior / interior doors fire doors.Quick installation: This non-perforation sensor automatic door closer adopts adhesive installation without holes for easy installation with good closing and does not damage the wall.Quality ABS plastic shell: Our automatic door closer with puncture sensor with high quality ABS plastic shell anti-oxidation anti-corrosion wear-resistant weatherproof high temperature resistant for a long service life.