Easy to use: The tent tensioner is very easy to install by simply threading the elastic through the two eyelets and pressing the eyelet to attach it to the plastic ball. Flexible: The ball on the cord allows you to adjust its length as needed, so you can stretch your tent fabric during wilderness camping without having to fold or wrinkle it. Reusable: The ball is made of durable black plastic and the elastic core is made of high-quality rubber, making it durable and wear-resistant. Both the plastic and the rubber are weather-resistant. Tensioner size: The tent tensioner set includes 30 pieces. Fifteen pieces are 150 mm long, allowing for an extension of up to 300 mm, and fifteen others are 200 mm long, allowing for an extension of up to 400 mm. The ball's diameter is 22 mm. Wide range of uses: The adjustable bungee cord is ideal for securing household items, awnings, tarpaulins, outdoor covers, panels, trampolines, tent bungee cords, outdoor curtains, etc. Product specifications ● Type: Adjustable bungee cord (pack of 30) ● Material: Durable black plastic ball, high-quality elastic rubber core (durable, wear-resistant, weather-resistant) ● Lengths: 15 pieces of 150 mm (stretches to 300 mm) + 15 pieces of 200 mm (stretches to 400 mm) ● Ball diameter: 22 mm ● Instructions: Thread the bungee cord through the two eyelets, attach to the ball; adjust the length using the ball; Stretch the fabric without wrinkling or creasing it ● Uses: Household items, awnings, tarpaulins, outdoor covers, panels, trampolines, tent bungee cords, outdoor curtains, etc. Packing list ● 30 x bungee cords (15 x 150 mm + 15 x 200 mm) General description This set of 30 adjustable bungee cords (15 x 150 mm extendable to 300 mm, 15 x 200 mm extendable to 400 mm, 22 mm ball diameter) is made of durable black plastic and high-quality rubber (durable, wear-resistant and weather-resistant). Installation is simple: thread the bungee cord through the two eyelets and attach it to the ball. The ball allows you to adjust