Chain Compatibility: Optimized for use with 1/4-inch to 5/16-inch transport chain systems. It is fully compatible with Grade 30, Grade 43, and Spectrum 7® Grade 70 chains. Working Load Limit (WLL): Rated for a maximum load capacity of 4,700 lbs. Safety Factor: Features a design safety factor of 4:1 for standard configurations. Materials & Construction: The primary body is crafted from forged, heat-treated carbon steel, while the alloy steel connection pins are thoroughly quenched and tempered for extreme durability.