A galvanized steel tightener is a mechanical device consisting of two hooks or eyelets connected by a threaded body, allowing precise adjustment of the tension of a cable or stay wire. Galvanization protects the tensioner from corrosion, making it suitable for outdoor use. Robust, economical, and easy to adjust, it is widely used to tension cables for fences, guy wires, tarpaulins, lightweight structures, or gardening and DIY installations.