Tarp Tensioners: The ball tensioner contains 30 pieces. The cable length is 200 mm/7.9 inches. The extreme expansion length is almost 400 mm/15.7 inches. The cable length is 150 mm/5.9 inches. The extreme expansion length is almost 300 mm/11.8 inches. Easy-to-use black elastic tensioner: This ball tensioner is easier to use than others. Just pull the rubber cord through the hole and place it on the ball. This cord has the best strong elasticity. Don't worry that your item is too big for the cord to break. High-quality ball tensioner: These reliable rubber harnesses provide a secure grip for your tarps and banners. High-quality rubber and plastic ball. It is durable and friction-resistant. It has a large tension to fix the tarp firmly. Its lifespan is more than 2 years. Wide range of uses: Tarp tensioners are suitable for tents, tarps, posters, tensioners, expansion rings, tarp fasteners, rubber tarps, rubber tensioners, tents, rubber, curtains, etc. It is good equipment for camping or storage. Whether you are a professional worker ★『100% After-sales Guarantee』: You don't have 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 certainly give you a satisfactory answer.