Safe and Secure: Elastic tensioner, the elastic parts are made of high quality rubber, elastic, wear-resistant, durable and with a service life of more than 2 years Flexible and Adjustable: Mini stretcher is 18cm long and the longest stretcher is 36cm.There is a ball on the tension rope which can adjust the length of the rope at will Easy to Use Installation: Tensioner clip can be attached and removed in seconds. Simply pull the elastic band over the two holes or hooks and fold the ring over the plastic ball. Widely Used: Ideal for stationary household items, it can be easily and quickly stretched with tarpaulins, posters, gazebos, trampolines, covers, PVC banners.Common use Offer: A total of 25 tension ropes to meet all your requirements, plastic and rubber have high weather resistance and can be reused.It is a good camping or storage device