Turnbuckles: The ball turnbuckles contain 30 pieces and have a cable length of 200 mm / 7.9 inches. The extreme expansion length is close to 400mm / 15.7in. The cable length is 150mm / 5.9in. The extreme expansion length is close to 400mm / 15.7inch. Easy-to-use black bungee cord: This ball-type bungee cord is easier to use than others, just run the cable rubber through the hole and place it on the ball. This cable has the strongest elasticity. Don't worry if your stuff is so big the cable is broken. High Quality Ball Tensioners: These reliable rubber harnesses provide secure support for your tarps and banners. High quality rubber and plastic balls. It is durable and abrasion resistant. It has great tension to firmly fix the tarpaulin. Its service life is more than 2 years. Wide application: the tensioner is suitable for tents, tarps, posters, tensioners, telescopic rings, tarp supports, rubber tarps, rubber tensioners, tents, rubber , curtains, etc. It is a good equipment for camping or storage.Whether you are a professional worker