HIGH TENSION: With these rubber bands, the object to be stretched, such as a tent, flag or tarpaulin, is securely fixed thanks to an excellent tension force. EASY TO USE: Each tensioner has a plastic ball. Pass the lower end of the elastic through the eyelet and go around the plastic ball. Thanks to the tension exerted, the fixing will stay in place. VERSATILE USE: these tensioners offer many possibilities of use: they are particularly suitable for fixing tents, pavilions and covers of all kinds as well as covers for swimming pools and ponds. They can also be used to fix flags. Features advantages Durable, resistant and strong Weather-resistant bungee cords Easy installation and removal Many possibilities for usage ball diameter approx. 2.7cm, loop length 9cm Extensible up to approx. 30 cm maximum, thickness of elastic approx. 4 mm Scope of supply: your set includes 20 tensioners.