Tarpaulin tensioner: ball tensioner includes 30 pieces, cable length is 200mm7.9 inches. The maximum expansion length is almost 400mm15.7 inches. Easy-to-use black elastic tensioner: It is easier to use this ball tensioner than others. Just pull the rubber cable through the hole and place it on the ball. This cable has the best strong elasticity. Don't worry about your thing being so big that the cable will break. High-quality ball tensioner: These reliable rubber straps provide a secure grip for your tarpaulins and banners. High-quality rubber and plastic ball. It is durable and friction-resistant. It has great tension to secure the tarpaulin firmly. Its service life is more than 2 years. Wide range of applications: Tarpaulin tensioner is suitable for tents, tarpaulins, posters, tensioners, expansion rings, tarpaulin fasteners, rubber tarpaulins, rubber bungees, tents, rubber, curtains, etc. It is a good equipment for camping or storage. Whether you are a professional worker after-sales guarantee: You don't need to worry after purchasing the product. If you are not satisfied with our products or have any questions, please feel free to contact us. We will surely give you a satisfactory answer.