Features 1、Self Closing: Door closer can slowly close the door to reduce the damage to the door caused by heavy impacts, and can prevent you from forgetting to close the door. 2、Quiet Closing and Opening: Automatic door closing mechanism can reduce resistance of closing the door and reduce noise when opening and closing doors. 3、Rugged Material: Safety door closer is made of aluminum alloy material, durable, rustproof, and wear resistant, strong construction, has long use time. 4、Widely Used: Universal for left and right door, suitable for wooden doors, metal doors, commercial doors, fire doors, etc., suitable for door weight 20-40KG. 5、Easy Installation: Self closing door mechanism is simple to install, suitable for 100cm/39.37in maximum door width, ideal for home, office, hotel room doors. Specifications Item Type: Automatic Door Closer Material: Aluminum Alloy + Stainless Steel Applicable Door Weight: 20-40KG Maximum Door Width: Approx. 100cm/39.37in Applicable: Family Door or Wooden Door, etc. Weight: Approx. 342g/12.06oz Package List 1 x Automatic Door Closer 1 x Nonslip Gasket 1 x Sliding Push Rod 4 x Screw 1 x Nut 1 x Adjusting Lever 1 x Double Sided Tape 1 x Chinese and English Instructions