Tarpaulin stretcher: ball stretcher contains 30 pieces the rope length is 200mm/7.9inch. The extreme expansion length is almost 400 mm/15.7 inch. The cable length is 150mm/5.9inch. The extreme expansion length is almost 300mm/11.8inch. Easy to Use Black Bungee Cord: It is easier to use this ball cord than others, just pull the rubber cord 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. The High Quality Ball Bungee Cord: These reliable rubber harnesses provide a secure hold for your tarps and banners. rubber and the high quality plastic ball. It is durable and friction resistance. It has great tension to firmly fix the tarpaulin. Its using life is more than 2 years. Wide range of applicationsTarp tensioner is suitable for tents, tarps, posters, tensioners, expansion rings, tarp supports, rubber tarps, rubber tensioners , tents, rubber, curtains, etc. It is a 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 do not hesitate to contact us. We will surely give you a satisfactory answer.