1. The steel has good quality, is rust-proof, and is durable. 2. Professional installation is recommended. 3. Specifications: - Product name: Universal gas spring. - Force value: 200/250/320/380N. - Extended length: 19.5 cm/7.68 inches. - Stroke length: 60 mm/2.36 inches. - Rod diameter: 18 mm/0.71 inches. - Piston rod diameter: 8 mm/0.31 inches. - Type: Interior trim strip. - Color: Gray. - Material: Stainless steel. - Compatible models: Universal. - Quantity: 2 pieces. 4. Accessories: - A pair of multi - purpose universal gas springs, which are suitable for vehicle assembly, reconstruction projects, and gas spring modification. - They are also suitable for the hatches of boats and caravans, as well as many other application scenarios. 5. Package contents: - 2 universal gas springs.