The high quality ball tensioner: These reliable rubber harnesses provide a secure hold for your tarps and banners. rubber and the high quality plastic ball. It is durable and friction resistance. It has great tension to secure the tarpaulin firmly. FLEXIBLE: Banner elastics can be used professionally or privately in an optimal way Easy to use: It is easier to use this ball tensioner than others, just 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 will break. Wide range applicationsTarp stretcher is suitable for tents, tarps, posters, turnbuckles, expansion rings, tarp supports, tarps rubber, rubber stretchers, tents, rubber, curtains, etc. It is a good piece of equipment for camping or storage. Whether you are a professional worker or a "handyman", bungee cord takes care of your safety and your equipment so that you can fully concentrate on your projects. Ball Tensioner: Ball tensioner contains 30 pieces, The cable length is 150 mm/5.9 inch. The extreme expansion length is almost 300mm/11.8inch. Note: The data is manual measurement, please allow 1-91cm error, due to light differences and screen, there will be a certain color difference, the specific received in kind prevail.