Yescom 8PCS M6 Turnbuckle Hook and Eye is designed to adjust tension of cables or ropes by rotating its central frame, allowing for precise tightening/loosening Features an adjustable length, ranging from 5 7/8' when opened to 8 7/16' when closed Made from 304 stainless steel, resists rust, corrosion and weathering, ensuring long-lasting use Simplify your setup with hook and eye design, easy to attach and adjust Ideal for fences, DIY plant trellis, cable railings, clotheslines, sails, string lights