Size: M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24. Material: 304 Stainless Steel. Stainless Steel Hook-Hook/Hook-Eye/Eye-Eye Straining Screw Adjusters. These are also known as Tensioners, Turn Buckles, Straining Screws, Barrel Strainers, or Open Body Rigging Screws.
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