Trade Size: 1/4 inch (also covers 9/32" applications depending on the chain standard). Working Load Limit (WLL): 1,325 lbs (0.66 tons) with a standard 4:1 design factor .Material: Quenched and tempered drop-forged steel with a hot-dip galvanized finish for weather and corrosion resistance. Design: Interlocking halves are joined together by integral rivets rather than interlocking lugs, making the overall profile highly compact.