This Open Type Stainless Steel Turnbuckle (also called marine rigging screw) is a practical tensioning hardware specially designed for marine and coastal applications. As the product picture shows, this open-body turnbuckle is equipped with dual-jaw ends, crafted from premium 304 or 316 stainless steel. It delivers outstanding rust resistance, corrosion resistance and salt spray resistance, perfectly adapting to harsh salt water, humid and coastal environments with no performance degradation after long-term use. The precision open structure allows easy and visible tension adjustment, you can directly check the thread condition during operation, ensuring safe, accurate and stable tightening for wire ropes, cables or chains. It is widely applied for ship sail rigging, dock cable tensioning, marine construction, outdoor railing installation and general industrial rigging operations. Multiple specifications and sizes are available, OEM customization is supported.