describe Stable and durable - rubber tensioner inside Product description Better than cable ties. These stretchers can be used multiple times. By moving the knot, the length of the rubber may be different from yours. Tarpaulins that are too soft stretch quickly. These tensioners are used as a universal tool for fastening advertising tarpaulins, Flooring, cables, advertising banners on beams, etc. in or on frame structures. A place that needs a fixed time. the black Material: latex yarn + polypropylene. Ball diameter: 22mm. Maximum load: approx. 5 kg Contents: 30 rubber tensioners (20 cm) . Latex, elastic and reusable. The plastic and rubber are weather resistant and suitable for indoor and outdoor use. EASY AND QUICK TO USE: The tarp stretcher is easy to put on and take off. Simply thread the rubber bands through the eyelets and pull them over the ball. Wide range of uses: Tent rubber bands with balls are ideal accessories for securing roof tents and garden tents, and can also be used for flexible fastening of advertising banners, scaffolding banners, construction tarps, etc. Scope of delivery: 30 black rubber turnbuckles (20cm)