Product Color: silver Material: stainless steel Size: 11.2 * 2.1cm / 4.41 * 0.83inch Screw Hole Diameter: 0.5cm / 0.19inch Package List: 4 * Boat Cleat 1.Material: Flagpole hook made from high quality stainless steel which is strong, durable, rustproof and corrosion resistant for long term use. 2.Easy to use: This non-slip skateboard is precision polished, mirror polished, precise, shiny and has good flatness. It is also easy to install without soldering; while being lightweight, it will hold the rope tight without worrying about falling or slipping. 3.Safety: The blind cord rope clamp hooks can tie small ropes or cords of blinds or umbrellas out of reach to prevent accidents and protect children. 4.Apply: Rope clamp hooks can be used for all types of blind curtain shading rope as well as flag poles, small boats, awnings, tarps and mooring ropes. 5.Widely Used: This non-slip skateboard is used for boats, yachts, fiberglass yachts, inflatables, business yachts and other types of yachts. It is also an ideal choice for attaching ropes to flag poles, boats, awnings, tarps, etc.