DIMENSIONS: Hook Length: 406mm / 16 Hook Main Body Diameter: 6mm / 0.24 Screw Size: 5mm / 0.2 Base Size: 39mm x 27mm / 1.5 x 1.1 Material: Stainless Steel; Surface Treatment: Brushed Finish. FUNCTION: Good for fixing the position of the window, wind-proof, great to control window open and silent holders. DURABILITY: This solid cabin hook is made of stainless steel, solid and simple structure, anti-rust, anti-corrosion, passivation processed surface, top grade appearance, providing years of effortless rolling and durability. UTILITY: Can be used to home, office, supermarket, factory and so on. Recommended for general use on window. INSTALLATION: Screw-fixing type, consists of a hook and eye closure lock, come with matched mounting screws, easy to use which will help you fix the cabin hook safely. Before installation, pay attention to the position of the lifting ring so that the wind hook is aligned with the eyelet.