Application: The elastic cord hook can be stretched for a very long time, durable to use. The rubber expander with hook is an ideal accessory for using awnings and garden tents. Reliability: the elastic expander with hooks are made of stretchable latex and strong steel; durable. Durable, flexible and elastic, good grip, high strength, reusable. Use: Suitable for indoor and outdoor use, they make it easy and quick to tension tarpaulins, posters, pavilions, trampolines, mesh banners, PVC banners, awnings and films Easy to use: rubber bungee cords can be attached in seconds; pass the sling through the tent eyelet and connect the hook to the sling. the rubber tensioner can be disassembled and reused after use. Package content: 12 x 6mm thick sturdy rubber bands with spiral hooks, the rubber bands have a total length of 16cm - including including the hook.