Stainless steel turnbuckles, also known as rigging screws or bottle screws, are adjustable tensioning devices with two threaded end fittings inside a central body.
Usually made of 304/316 stainless steel, resisting rust and saltwater corrosion. Rotating the main body shortens or lengthens the overall length to adjust tension of cables, wires and fences. Mainly applied for sail rigging, guardrail tensioning and cable bracing.
