Our 316 Stainless Steel Bow Shackles are made with high corrosion resistance stainless steel. These Stainless Steel Bow Shackles have a 5 to 1 WLL which rates our Bow Shackle's WLL at 20% of its Ultimate Breaking Strength. The WLL is the maximum load that should ever be applied and is based on an in-line pull with no shock load. A competent person should make an assessment of the conditions of use to determine the maximum load allowed.