1、AUTO DOOR CLOSER: Automatic door closer has an automatic cushion closing function, effective anti pinching, to avoid forgetting to close the door. 2、THICKENED SPRING: Auto door closer adopts thickened spring, the movement is made of 45 gauge steel, and the copper core gear is wear resistant. 3、HARDNESS QUALITY ENHANCEMENT: The hardness quality is enhanced to reduce the probability of oil leakage, and the service life and performance are greatly improved. 4、HYDRAULIC BUFFER: Adjustable closing speed door closer hydraulic cushion automatic door closing, can automatically and quietly close your door. 5、ALUMINUM ALLOY: Automatic door closing mechanism is made of aluminum alloy, wear resistant and durable, with adjustable elasticity strength. Item Type: Automatic Door Closer Material: Aluminium Alloy, Steel, Copper 1 x Automatic Door Closer