High Quality Ball Tensioner - Our 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 tarpaulin. Its usage life is more than 2 years. The size of the turnbuckle - the length of the cord is 15 cm/5.9 inch. The extreme expansion length is almost 28 cm / 11 inch. The cable diameter is 0.5cm, and the ball diameter is 2.9cm/1.1 inch, which are longer than that of other sellers to fix the tarpaulin more firmly. The way of use – It is easier to use this ball stretcher than others, just pull the rubber cord 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. Multi-Function - Our ball stretcher comes in 40 pieces. Tarp tensioner is suitable for tents, tarps, posters, tensioners, expansion rings, tarp supports, rubber tarps, rubber tensioners, tents, rubber, curtains, etc. It is a good equipment