Swivels link together two parts that have separate rotational directions reducing knotting or twisting and relieving stress. Constructed of corrosion resistant investment cast 316 stainless steel. These eye to eye swivels are ideal for anchor and mooring lines. Large eyes accommodate shackles for chain connections or eye splices with thimbles for anchor rodes. Size 5/16" Length 3-5/8" Eye 13/16" dia.