500G/1000G/1200G: P12 plastic coated steel wire rope, the service life is 10,000 times. Note: Use a large pulling force for heavy doors and a small pulling force for light doors Description: FEATURES: Anti oxidation, anti corrosion, stability, wear resistance, weather resistance, hydraulic pressure, safety cut off device WIDELY APPLICABLE: Automatic door closers are suitable for left and right doors, wooden doors and some metal doors, residential and commercial doors, exterior/interior door closers, fire doors. PLEASE NOTE: Door closers are not suitable for doors that are carpeted or have too much friction EASY TO USE: punch free automatic door closer, self adhesive, good firmness, no damage to the wall, easy installation, high temperature resistance, Weight: 0.1763698096 Pounds, Manufacturer: Zambuph