Use these adjustable boat fender hangers when docking or to easily move your fenders around your boat when needed. Height is easily adjusted with our unique line-gripping design, yet the product remains strong and durable. Simple, yet effective, this Quick Tender works with virtually any type of line. This product is intended to fit best on 1” rails (25 mm), but will fit on smaller rails, as well as some cleats and window frames. Made in USA