6 Pack 1/4″ Stainless Steel D-Ring Shackle Heavy Duty Screw Pin Anchor Shackle by | Jul 4, 2026🛠️Sturdy 316 Stainless Steel Bow Shackle. The clearly defined threads facilitate smooth operation. Made from marine-grade stainless steel 316, these bow shackles are sturdy and corrosion-resistant.