Tarpaulin tensioner: ball tensioner contains 30 pieces, the cable length is 200 mm/7.9 inch.The extreme expansion length is almost 400 mm/15.7 inch. Easy to use black elastic tensioner: It is easier to use this ball tensioner than others, Just 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 so big that the cable breaks. High quality ball tensioner: 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 secure the tarpaulin firmly.Its use life is more than 2 years. Wide range of applications: Tarpaulin tensioner is suitable for tents, tarpaulins, posters, tensioners, expansion rings, tarpaulin brackets, rubber tarpaulins , rubber bungees, tents, rubber, curtains, etc.It is a good equipment for camping or storage.Whether you are a professional worker 100% after-sales guarantee: You don't have to worry after purchasing the product.If you are not satisfied with our products or have any questions, please do not hesitate to contact us.We will surely give you a satisfactory answer.