High Quality Zinc Alloy Material: The Gas Spring Is Made Of Abs Plastic And Zinc Alloy, Which Is Strong And Durable, Not Easy To Break, Has Anti-Corrosion, Anti-Oxidation, Anti-Rust Effects, Long Service Life , Wear Resistance And High Impact Resistance Powerful Air Pressure: The Pressure Support Of Each Spring Can Reach 100 N (10 Kg), And The Piston Cylinder Is Filled With Inert Gas-Nitrogen. It Is Very Safe And Stable When Using Gas Springs, And Can Be Used With Confidence Good Shock Absorption Effect: The Door Can Be Opened Or Closed Under Comfortable Cushioning, Very Stable Without Collision Door, Reducing The Impact, Giving You A Good Experience, Strong Stability Easy To Install: The Contact Area Between The Cabinet And The Piston Is Enlarged By The 3-Hole Positioning, The Gas Strut Can Be Pulled To The Longest Position, Then The Upper Door Is Pulled To The Maximum Position And Both Ends Are Fixed With Screws Wide Range Of Uses: Suitable For Pvc, Aluminum Or Wooden Doors, Doors Overhead Doors, Cabinets, Storage Boxes, Furniture Doors And Other Cabinet Doors. Comes With Mounting Screws For Easy Replacement Of Old Closet Dampers At Home