Excellent material: The swimming pool cover rope tensioner is made of high quality aluminum alloy, which is not easy to break or deform, not easy to rust, and durable. Easy to install: Simply insert the rope through the eyelet of the swimming pool cover into the winch, and you can easily fix the rope on the swimming pool cover. Use firmly: With very good fixing effect, protect Fix the pool cover well from the strong wind, cover well and keep the pool clean. Wide Application: Suitable for steel wires, clotheslines, chains and other ropes, the pool cover winch is a good helper to fix the pool cover. Works for: It can protect your swimming pool from dust or debris. Sturdy enough for long time use. Suitable for round and oval pools of all sizes. Note: The data is manual measurement, please allow 1-41cm error, due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.