Trisonic Handy Tools Aluminum Clothesline Tightner Go to amazon.com Related posts Which is the best clothesline tightener? FeatureDesigned and engineered in USAComes with instructions back on productsBrand new and adjustableOne of the best clothesline tightener DescriptionOne of the best clothesline tightner. Designed and engineered in USA. Comes with instructions back on products. Brand new and adjustable.