Automatic Door Closer with Damper Buffer. Punch-Free Door Closer With Drawstring (1200g). Quality materials include ABS plastic and 1.5 meter steel cable. Suitable for wider doors. Anti-oxidation, anti-corrosion, rust resistance, stable, wear-resistant, weather-resistant, quiet and controlled stop device. Close the door at a constant speed. The automatic damping buffer allows the door to close at a constant speed. Helps reduce impact on the door frame. Easy to install. Hole-free installation. First wipe the dust in the installation area and keep clean and dry. Tear off the adhesive film from the wire winding box and the hook and adhere to the chosen installation position. Ready for use. Automatically close doors. Suitable for doors with a moderate closing force. Doors that open left and right, wooden and metal doors, residential and commercial doors, exterior/interior door closers, fire doors. Please Note: Door closers are not suitable for doors with carpet or too much friction. Wide Application. Multi-functional automatic door closer without punching. Suitable for home use, light office, hotel, dorm, classroom, business, shed, ranch, and home office.