Professional Materials: Imported Southeast Asia natural rubber latex wire with excellent elasticity and resilience, ensures constant tension and can be stretched up to 2 times. Robust & Durable: The highly elastic rubber core ensures that it does not tear or break so easily. High-strength polypropylene wire sleeve guarantees abrasion resistance, UV resistance and weather resistance. User-friendly: Rubber tensioners secure in seconds, very easy to use. Pull the rubber band through both eyelets for attachment and pull the loop over the ball. Package Delivery: 25 Bungee Cord with Balls. The diameter of the tent rubber is 0.16 inch and the diameter of the ball is 0.86 inch, the total length is 6 inch and can be stretched to 12 inch. Multi-application: The length of 6 inch is sufficient for more daily binding needs and reusable. Definitely a good helper for securing tarpaulins, tents, posters, banners, flags, trampolines, projection screen, etc.