Product Package Contents: 1 50* Rubber Band Tensioner. Our tarpaulin tensioners are made of high quality nylon, rubber and plastic balls. Durable and wear-resistant, long-term use. 2. Easier to operate than other ball spring tensioners, justpass the rubber cable through the hole and put it on the ball, this spring ball tensioner has the best strong elasticity. 3. The length of the ball turnbuckle contains 50 pieces, and the cable length is 150mm/5.9inch. The ultimate expansion lengthis almost 300 mm/11.8 inches. 4. Easy-to-use black elastic tensioner: This ball tensioner is easier to operate than others, just pass the rubber cable through the hole and put it on the ball. This cable has the best strong elasticity. Don't worryabout your stuff being so big that the cable will break. 5. Widely used: used for curtains, gazebos,Shipment Quantity: 50 PiecesPackage Contents: Only the above package contents, excluding other products.Size: 15cm(Reminder: The size is measured by hand, please allow 1-2 cm measurement error)Colour: Black(Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.)