The high quality: Ball Tensioner is made of high quality Nylon, rubber and plastic ball. It is durable and friction resistance. It has great tension to firmly fix the tarp. Tarp tensioner is suitable for tents, posters, pavilions, trampolines, mesh banners, PVC banners, It has great tension to fix the tarpaulin firmly.< /p> Reusable: rubber ball tensioner can be attached and removed in seconds. Plastic and rubber have great weather resistance. Adjust the length of the rubber by moving the knot. 30 pieces The cable length is 150 mm/5.9 inch. The extreme expansion length is almost 300 mm/11.8 inch. The way to use This ball stretcher is easier to use than others, just pull the rubber cable through the hole and to 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. Product Description Elastic Bungee Cord for Banner, Tarp, Gazebo, Tent, Curtains Extension Harness, Bracket sheeting, durable and friction resistance. It has a great tension to fix the tarp firmly. Useful for multiple daily use, Very easy to use tensioner. Attached tent tensioners can be attached and removed in a few seconds without additional tools. No unnecessary cutting of cable ties already mounted, Tensioners can be reused at any time. Specification: 30 pieces Set length: 30 Pieces 150mm rubber tensioner Material: Ball tensioner is made of white Nylon, rubber and high quality plastic ball.