516, Stainless Steel Quick Link, Ideal For Marine, Industrial Agricultural Use, Excellent For Applications Involving Repeated Loading Or Fatigue, Superior Corrosion Resistance, Provides Greater Strength Than Comparable Zinc Solid Brass Products, New Design Provides Greater Strength, Safe WLL 300 LB, Do Not Use For Overhead Lifting, Support Of Human Weight, Athletic Or Playground Equipment, For Safety Consult Manufacturer, Inspect Frequently, Boxed Loose