Material: Elastic cord with hook is made of stretchy latex and strong steel; durable, flexible and elastic, and reusable. Dimensions: Total length of each hook is 15cm/5.91inch; hook diameter is 2.5cm/0.98inch; the rope thickness is about 6mm/0.24inch. Easy to use: Elastic rubber cord attaches in seconds; thread the canvas through the eyelet of the tent, then attach the hook to the canvas. Reusable: The rubber tensioner can be disassembled and reused after use. In the field of camping, they can help you pitch your tent in an emergency. Application: The rubber expander with hook is an ideal accessory for using awnings and garden tents, and is also a good helper for tying luggage and securing camping.