Product Description Package Contents: 30 * elastic band tensioners 1. Our tarp tensioners are made of high-quality nylon, rubber, and plastic balls, ensuring durability and wear resistance for long-term use. 2. Easier to use than other ball bungee cords, simply thread the elastic cable through the hole and secure it to the ball. This elastic ball tensioner offers superior strong elasticity. 3. Each package includes 30 ball bungee cords. The cable length is 200 mm / 7.9 inches, with an extreme expansion length of nearly 400 mm / 15.7 inches. Alternatively, the cable length is 150 mm / 5.9 inches, with an extreme expansion length of nearly 300 mm / 11.8 inches. 4. Easy-to-use black elastic tensioners: Thread the elastic cable through the hole and secure it to the ball. This cable boasts excellent strong elasticity, so you don't have to worry about it breaking, even with larger items. 5. Widely used for tarps, gazebos, trampolines, banners, securing pool covers, greenhouse covers, and truck covers.