Tarpaulin Tensioner: Ball tensioner contains 75 pieces, the cable length is 250 mm/9.84 inches. The extreme expansion length is almost 500 mm/31.5 inches. These reliable rubber harnesses provide a secure hold for your tarpaulins and banners. High-quality rubber and plastic ball. It is durable and friction-resistant. It has a high tension to firmly fix the tarpaulin. Tarpaulin tensioner is suitable for tents, posters, pavilions, trampolines, mesh banners, PVC banners, It has a high tension to firmly fix the tarpaulin. This ball tensioner is easier to use than others. Simply pull the rubber cable through the hole and place it on the ball. This cable has the best strong elasticity. Don't worry about your thing being too big for the cable to break. Rubber ball tensioners can be attached and removed in seconds. Plastic and rubber have great weather resistance. Adjust the length of the rubber by moving the knot.