Aluminum Rope Tightener makes it easy to tighten and connect lines. This carabiner is great for tethering canoes to vehicles, anchoring boxes on a dolly, and bundling wood. It also keeps tension where it's needed. You can loop your rope through the prongs of the carabiner and pull it tight. You can use the integrated carabiner to Connect lines quickly to a fixed point Like a D-ring, loop. The smart alternative to complex cam-locking tensioning devices or bungee cords is the Aluminum Rope Tightener Also, it controls high tension release to avoid dangerous unloading. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.