Home Miscellaneous Hooks & Snaps Zinc Plated Safety Spring Hook (Length 3-1/8″) Seasense Zinc Plated Safety Spring Hook (Length 3-1/8″) $3.99 Zinc Plated Safety Spring Hook (Length 3-1/8") quantity Add to cart Product Details Product Details Length 3-1/8″. Safe working load: 500 lbs. Break strength: 1,250 lbs. Safety spring hook with spring loaded feature. Corrosion resistant.