Tarpaulin tensioner: ball tensioner contains 75 pieces, the cable length is 200 mm/7.87 inch. The extreme expansion length is almost 400 mm/15.45 inch. These reliable rubber harnesses provide a secure hold for your tarps and banners. high quality rubber and plastic ball. It is durable and friction resistance. It has great tension to firmly fix the tarpaulin. Tarpaulin tensioner is suitable for tents, posters, pavilions, trampolines, mesh banners, PVC banners, It has great tension to firmly fix the tarpaulin.< /p> This ball tensioner is easier to use than others. Simply pull the rubber cable through the hole and place it over the ball. This cable has the best strong elasticity. Don't worry about your thing being so big that the cable breaks. 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.