1. The gas spring is made of premium metal materials, with long service life and more durable use. 2. The lift support struts adapt high-strength waterproof piston to seal;Excellent surface finish, easy to lift and reduce closing work. 3. Easy to install: Direct fit replacement lift support, makes opening and closing easy and comfortable, convenient and safe. Easy to install with simple hand tools. Specification: Product Name: Spring universal gas material: stainless steel Color: black Fixing Type: Eyelet Force: 750N Extended Length: 400mm / 15.74in Stroke Length: 150mm / 5.90in Rod Diameter: 10mm / 0.39in Tube Diameter: 21mm / 0.82in Eye Hole: 8mm / 0.31in Suitable for: bonnet, hood, box, caravan, car, bed, hatch door, cupboard, door Package Includes: 2pc x Shock Mounts Note: 1. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-1 inch difference due to manual measurement. (1 inch=2.54cm)